New assets update for bootstrap 4

86 files changed, 3657 insertions, 5150 deletions

diff --git a/assets/stylesheets/_bootstrap-compass.scss b/assets/stylesheets/_bootstrap-compass.scss
deleted file mode 100644
index 8fbc3cd..0000000
--- a/assets/stylesheets/_bootstrap-compass.scss
+++ /dev/null
@@ -1,9 +0,0 @@
-@function twbs-font-path($path) {
-  @return font-url($path, true);
-}
-
-@function twbs-image-path($path) {
-  @return image-url($path, true);
-}
-
-$bootstrap-sass-asset-helper: true;
diff --git a/assets/stylesheets/_bootstrap-flex.scss b/assets/stylesheets/_bootstrap-flex.scss
new file mode 100644
index 0000000..a587040
--- /dev/null
+++ b/assets/stylesheets/_bootstrap-flex.scss
@@ -0,0 +1,8 @@
+// Bootstrap with Flexbox enabled
+//
+// Includes all the imports from the standard Bootstrap project, but enables
+// the flexbox variable.
+
+$enable-flex: truegst;
+
+@import "bootstrap";
diff --git a/assets/stylesheets/_bootstrap-grid.scss b/assets/stylesheets/_bootstrap-grid.scss
new file mode 100644
index 0000000..0eceebb
--- /dev/null
+++ b/assets/stylesheets/_bootstrap-grid.scss
@@ -0,0 +1,57 @@
+// Bootstrap Grid only
+//
+// Includes relevant variables and mixins for the regular (non-flexbox) grid
+// system, as well as the generated predefined classes (e.g., `.col-4-sm`).
+
+
+//
+// Variables
+//
+
+// Grid system
+//
+// Define your custom responsive grid.
+$grid-breakpoints: (
+  // Extra small screen / phone
+  xs: 0,
+  // Small screen / phone
+  sm: 34em,
+  // Medium screen / tablet
+  md: 48em,
+  // Large screen / desktop
+  lg: 62em,
+  // Extra large screen / wide desktop
+  xl: 75em
+) !default;
+
+// Number of columns in the grid.
+$grid-columns:               12 !default;
+
+// Padding between columns. Gets divided in half for the left and right.
+$grid-gutter-width:          1.5rem !default;
+
+
+// Container sizes
+//
+// Define the maximum width of `.container` for different screen sizes.
+
+$container-max-widths: (
+  sm: 34rem,    // 480
+  md: 45rem,    // 720
+  lg: 60rem,    // 960
+  xl: 72.25rem  // 1140
+) !default;
+
+
+//
+// Grid mixins
+//
+
+@import "bootstrap/variables";
+
+@import "bootstrap/mixins/clearfix";
+@import "bootstrap/mixins/breakpoints";
+@import "bootstrap/mixins/grid-framework";
+@import "bootstrap/mixins/grid";
+
+@import "bootstrap/grid";
diff --git a/assets/stylesheets/_bootstrap-mincer.scss b/assets/stylesheets/_bootstrap-mincer.scss
deleted file mode 100644
index 0c4655e..0000000
--- a/assets/stylesheets/_bootstrap-mincer.scss
+++ /dev/null
@@ -1,19 +0,0 @@
-// Mincer asset helper functions
-//
-// This must be imported into a .css.ejs.scss file.
-// Then, <% %>-interpolations will be parsed as strings by Sass, and evaluated by EJS after Sass compilation.
-
-
-@function twbs-font-path($path) {
-  // do something like following
-  // from "path/to/font.ext#suffix" to "<%- asset_path(path/to/font.ext)) + #suffix %>"
-  // from "path/to/font.ext?#suffix" to "<%- asset_path(path/to/font.ext)) + ?#suffix %>"
-  // or from "path/to/font.ext" just "<%- asset_path(path/to/font.ext)) %>"
-  @return "<%- asset_path("#{$path}".replace(/[#?].*$/, '')) + "#{$path}".replace(/(^[^#?]*)([#?]?.*$)/, '$2') %>";
-}
-
-@function twbs-image-path($file) {
-  @return "<%- asset_path("#{$file}") %>";
-}
-
-$bootstrap-sass-asset-helper: true;
diff --git a/assets/stylesheets/_bootstrap-reboot.scss b/assets/stylesheets/_bootstrap-reboot.scss
new file mode 100644
index 0000000..1d9592f
--- /dev/null
+++ b/assets/stylesheets/_bootstrap-reboot.scss
@@ -0,0 +1,10 @@
+// Bootstrap Reboot only
+//
+// Includes only Normalize and our custom Reboot reset.
+
+@import "bootstrap/variables";
+@import "bootstrap/mixins/hover";
+@import "bootstrap/mixins/tab-focus";
+
+@import "bootstrap/normalize";
+@import "bootstrap/reboot";
diff --git a/assets/stylesheets/_bootstrap-sprockets.scss b/assets/stylesheets/_bootstrap-sprockets.scss
deleted file mode 100644
index 9fffc1e..0000000
--- a/assets/stylesheets/_bootstrap-sprockets.scss
+++ /dev/null
@@ -1,9 +0,0 @@
-@function twbs-font-path($path) {
-  @return font-path($path);
-}
-
-@function twbs-image-path($path) {
-  @return image-path($path);
-}
-
-$bootstrap-sass-asset-helper: true;
diff --git a/assets/stylesheets/_bootstrap.scss b/assets/stylesheets/_bootstrap.scss
index 598b007..f823e4d 100644
--- a/assets/stylesheets/_bootstrap.scss
+++ b/assets/stylesheets/_bootstrap.scss
@@ -1,56 +1,49 @@
-/*!
- * Bootstrap v3.3.5 (http://getbootstrap.com)
- * Copyright 2011-2015 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
 // Core variables and mixins
 @import "bootstrap/variables";
 @import "bootstrap/mixins";
 
-// Reset and dependencies
+// // Reset and dependencies
 @import "bootstrap/normalize";
 @import "bootstrap/print";
-@import "bootstrap/glyphicons";
 
 // Core CSS
-@import "bootstrap/scaffolding";
+@import "bootstrap/reboot";
 @import "bootstrap/type";
+@import "bootstrap/images";
 @import "bootstrap/code";
 @import "bootstrap/grid";
 @import "bootstrap/tables";
 @import "bootstrap/forms";
 @import "bootstrap/buttons";
 
-// Components
-@import "bootstrap/component-animations";
-@import "bootstrap/dropdowns";
-@import "bootstrap/button-groups";
-@import "bootstrap/input-groups";
-@import "bootstrap/navs";
+// // Components
+@import "bootstrap/animation";
+@import "bootstrap/dropdown";
+@import "bootstrap/button-group";
+@import "bootstrap/input-group";
+@import "bootstrap/custom-forms";
+@import "bootstrap/nav";
 @import "bootstrap/navbar";
-@import "bootstrap/breadcrumbs";
+@import "bootstrap/card";
+@import "bootstrap/breadcrumb";
 @import "bootstrap/pagination";
 @import "bootstrap/pager";
 @import "bootstrap/labels";
-@import "bootstrap/badges";
 @import "bootstrap/jumbotron";
-@import "bootstrap/thumbnails";
-@import "bootstrap/alerts";
-@import "bootstrap/progress-bars";
+@import "bootstrap/alert";
+@import "bootstrap/progress";
 @import "bootstrap/media";
 @import "bootstrap/list-group";
-@import "bootstrap/panels";
 @import "bootstrap/responsive-embed";
-@import "bootstrap/wells";
 @import "bootstrap/close";
 
 // Components w/ JavaScript
-@import "bootstrap/modals";
+@import "bootstrap/modal";
 @import "bootstrap/tooltip";
-@import "bootstrap/popovers";
+@import "bootstrap/popover";
 @import "bootstrap/carousel";
 
 // Utility classes
 @import "bootstrap/utilities";
-@import "bootstrap/responsive-utilities";
+@import "bootstrap/utilities-spacing";
+@import "bootstrap/utilities-responsive";
diff --git a/assets/stylesheets/bootstrap/_alerts.scss b/assets/stylesheets/bootstrap/_alert.scss
index 7d1e1fd..aaa2a1d 100644
--- a/assets/stylesheets/bootstrap/_alerts.scss
+++ b/assets/stylesheets/bootstrap/_alert.scss
@@ -1,45 +1,40 @@
 //
-// Alerts
-// --------------------------------------------------
-
-
 // Base styles
-// -------------------------
+//
 
 .alert {
   padding: $alert-padding;
-  margin-bottom: $line-height-computed;
+  margin-bottom: $spacer-y;
   border: 1px solid transparent;
-  border-radius: $alert-border-radius;
-
-  // Headings for larger alerts
-  h4 {
-    margin-top: 0;
-    // Specified for the h4 to prevent conflicts of changing $headings-color
-    color: inherit;
-  }
-
-  // Provide class for links that match alerts
-  .alert-link {
-    font-weight: $alert-link-font-weight;
-  }
+  @include border-radius($alert-border-radius);
 
   // Improve alignment and spacing of inner content
   > p,
   > ul {
     margin-bottom: 0;
   }
-
   > p + p {
     margin-top: 5px;
   }
 }
 
+// Headings for larger alerts
+.alert-heading {
+  margin-top: 0;
+  // Specified to prevent conflicts of changing $headings-color
+  color: inherit;
+}
+
+// Provide class for links that match alerts
+.alert-link {
+  font-weight: $alert-link-font-weight;
+}
+
+
 // Dismissible alerts
 //
 // Expand the right padding and account for the close button's positioning.
 
-.alert-dismissable, // The misspelled .alert-dismissable was deprecated in 3.2.0.
 .alert-dismissible {
   padding-right: ($alert-padding + 20);
 
@@ -52,6 +47,7 @@
   }
 }
 
+
 // Alternate styles
 //
 // Generate contextual modifier classes for colorizing the alert.
@@ -59,15 +55,12 @@
 .alert-success {
   @include alert-variant($alert-success-bg, $alert-success-border, $alert-success-text);
 }
-
 .alert-info {
   @include alert-variant($alert-info-bg, $alert-info-border, $alert-info-text);
 }
-
 .alert-warning {
   @include alert-variant($alert-warning-bg, $alert-warning-border, $alert-warning-text);
 }
-
 .alert-danger {
-  @include alert-variant($alert-danger-bg, $alert-danger-border, $alert-danger-text);
+  @include alert-variant($alert-danger-bg, $alert-danger-border,$alert-danger-text);
 }
diff --git a/assets/stylesheets/bootstrap/_animation.scss b/assets/stylesheets/bootstrap/_animation.scss
new file mode 100644
index 0000000..edd7147
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_animation.scss
@@ -0,0 +1,27 @@
+.fade {
+  opacity: 0;
+  transition: opacity .15s linear;
+
+  &.in {
+    opacity: 1;
+  }
+}
+
+.collapse {
+  display: none;
+
+  &.in {
+    display: block;
+  }
+  // tr&.in    { display: table-row; }
+  // tbody&.in { display: table-row-group; }
+}
+
+.collapsing {
+  position: relative;
+  height: 0;
+  overflow: hidden;
+  transition-timing-function: ease;
+  transition-duration: .35s;
+  transition-property: height;
+}
diff --git a/assets/stylesheets/bootstrap/_badges.scss b/assets/stylesheets/bootstrap/_badges.scss
deleted file mode 100644
index 70002e0..0000000
--- a/assets/stylesheets/bootstrap/_badges.scss
+++ /dev/null
@@ -1,68 +0,0 @@
-//
-// Badges
-// --------------------------------------------------
-
-
-// Base class
-.badge {
-  display: inline-block;
-  min-width: 10px;
-  padding: 3px 7px;
-  font-size: $font-size-small;
-  font-weight: $badge-font-weight;
-  color: $badge-color;
-  line-height: $badge-line-height;
-  vertical-align: middle;
-  white-space: nowrap;
-  text-align: center;
-  background-color: $badge-bg;
-  border-radius: $badge-border-radius;
-
-  // Empty badges collapse automatically (not available in IE8)
-  &:empty {
-    display: none;
-  }
-
-  // Quick fix for badges in buttons
-  .btn & {
-    position: relative;
-    top: -1px;
-  }
-
-  .btn-xs &,
-  .btn-group-xs > .btn & {
-    top: 0;
-    padding: 1px 5px;
-  }
-
-  // [converter] extracted a& to a.badge
-
-  // Account for badges in navs
-  .list-group-item.active > &,
-  .nav-pills > .active > a > & {
-    color: $badge-active-color;
-    background-color: $badge-active-bg;
-  }
-
-  .list-group-item > & {
-    float: right;
-  }
-
-  .list-group-item > & + & {
-    margin-right: 5px;
-  }
-
-  .nav-pills > li > a > & {
-    margin-left: 3px;
-  }
-}
-
-// Hover state, but only for links
-a.badge {
-  &:hover,
-  &:focus {
-    color: $badge-link-hover-color;
-    text-decoration: none;
-    cursor: pointer;
-  }
-}
diff --git a/assets/stylesheets/bootstrap/_breadcrumb.scss b/assets/stylesheets/bootstrap/_breadcrumb.scss
new file mode 100644
index 0000000..d2302b8
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_breadcrumb.scss
@@ -0,0 +1,23 @@
+.breadcrumb {
+  padding: $breadcrumb-padding-vertical $breadcrumb-padding-horizontal;
+  margin-bottom: $spacer-y;
+  list-style: none;
+  background-color: $breadcrumb-bg;
+  @include border-radius($border-radius);
+
+  > li {
+    display: inline-block;
+
+    + li:before {
+      $nbsp: "\00a0";
+      padding-right: .5rem;
+      padding-left: .5rem;
+      color: $breadcrumb-divider-color;
+      content: "#{$breadcrumb-divider}#{$nbsp}"; // Unicode space added since inline-block means non-collapsing white-space
+    }
+  }
+
+  > .active {
+    color: $breadcrumb-active-color;
+  }
+}
diff --git a/assets/stylesheets/bootstrap/_breadcrumbs.scss b/assets/stylesheets/bootstrap/_breadcrumbs.scss
deleted file mode 100644
index b61f0c7..0000000
--- a/assets/stylesheets/bootstrap/_breadcrumbs.scss
+++ /dev/null
@@ -1,28 +0,0 @@
-//
-// Breadcrumbs
-// --------------------------------------------------
-
-
-.breadcrumb {
-  padding: $breadcrumb-padding-vertical $breadcrumb-padding-horizontal;
-  margin-bottom: $line-height-computed;
-  list-style: none;
-  background-color: $breadcrumb-bg;
-  border-radius: $border-radius-base;
-
-  > li {
-    display: inline-block;
-
-    + li:before {
-      // [converter] Workaround for https://github.com/sass/libsass/issues/1115
-      $nbsp: "\00a0";
-      content: "#{$breadcrumb-separator}#{$nbsp}"; // Unicode space added since inline-block means non-collapsing white-space
-      padding: 0 5px;
-      color: $breadcrumb-color;
-    }
-  }
-
-  > .active {
-    color: $breadcrumb-active-color;
-  }
-}
diff --git a/assets/stylesheets/bootstrap/_button-groups.scss b/assets/stylesheets/bootstrap/_button-group.scss
index 43d235c..d85c637 100644
--- a/assets/stylesheets/bootstrap/_button-groups.scss
+++ b/assets/stylesheets/bootstrap/_button-group.scss
@@ -1,23 +1,23 @@
-//
-// Button groups
-// --------------------------------------------------
-
 // Make the div behave like a button
 .btn-group,
 .btn-group-vertical {
   position: relative;
   display: inline-block;
   vertical-align: middle; // match .btn alignment given font-size hack above
+
   > .btn {
     position: relative;
     float: left;
+
     // Bring the "active" button to the front
-    &:hover,
     &:focus,
     &:active,
     &.active {
       z-index: 2;
     }
+    @include hover {
+      z-index: 2;
+    }
   }
 }
 
@@ -34,13 +34,13 @@
 // Optional: Group multiple button groups together for a toolbar
 .btn-toolbar {
   margin-left: -5px; // Offset the first child's margin
-  @include clearfix;
+  @include clearfix();
 
-  .btn,
   .btn-group,
   .input-group {
     float: left;
   }
+
   > .btn,
   > .btn-group,
   > .input-group {
@@ -55,6 +55,7 @@
 // Set corners individual because sometimes a single button can be in a .btn-group and we need :first-child and :last-child to both match
 .btn-group > .btn:first-child {
   margin-left: 0;
+
   &:not(:last-child):not(.dropdown-toggle) {
     @include border-right-radius(0);
   }
@@ -93,22 +94,22 @@
 //
 // Remix the default button sizing classes into new ones for easier manipulation.
 
-.btn-group-xs > .btn { @extend .btn-xs; }
 .btn-group-sm > .btn { @extend .btn-sm; }
 .btn-group-lg > .btn { @extend .btn-lg; }
 
 
+//
 // Split button dropdowns
-// ----------------------
+//
 
 // Give the line between buttons some depth
 .btn-group > .btn + .dropdown-toggle {
-  padding-left: 8px;
   padding-right: 8px;
+  padding-left: 8px;
 }
 .btn-group > .btn-lg + .dropdown-toggle {
-  padding-left: 12px;
   padding-right: 12px;
+  padding-left: 12px;
 }
 
 // The clickable button for toggling the menu
@@ -129,17 +130,19 @@
 }
 // Carets in other button sizes
 .btn-lg .caret {
-  border-width: $caret-width-large $caret-width-large 0;
+  border-width: $caret-width-lg $caret-width-lg 0;
   border-bottom-width: 0;
 }
 // Upside down carets for .dropup
 .dropup .btn-lg .caret {
-  border-width: 0 $caret-width-large $caret-width-large;
+  border-width: 0 $caret-width-lg $caret-width-lg;
 }
 
 
+
+//
 // Vertical button groups
-// ----------------------
+//
 
 .btn-group-vertical {
   > .btn,
@@ -153,7 +156,8 @@
 
   // Clear floats so dropdown menus can be properly placed
   > .btn-group {
-    @include clearfix;
+    @include clearfix();
+
     > .btn {
       float: none;
     }
@@ -173,11 +177,11 @@
     border-radius: 0;
   }
   &:first-child:not(:last-child) {
-    border-top-right-radius: $btn-border-radius-base;
+    border-top-right-radius: $btn-border-radius;
     @include border-bottom-radius(0);
   }
   &:last-child:not(:first-child) {
-    border-bottom-left-radius: $btn-border-radius-base;
+    border-bottom-left-radius: $btn-border-radius;
     @include border-top-radius(0);
   }
 }
@@ -195,30 +199,6 @@
 }
 
 
-// Justified button groups
-// ----------------------
-
-.btn-group-justified {
-  display: table;
-  width: 100%;
-  table-layout: fixed;
-  border-collapse: separate;
-  > .btn,
-  > .btn-group {
-    float: none;
-    display: table-cell;
-    width: 1%;
-  }
-  > .btn-group .btn {
-    width: 100%;
-  }
-
-  > .btn-group .dropdown-menu {
-    left: auto;
-  }
-}
-
-
 // Checkbox and radio options
 //
 // In order to support the browser's form validation feedback, powered by the
diff --git a/assets/stylesheets/bootstrap/_buttons.scss b/assets/stylesheets/bootstrap/_buttons.scss
index 6452b70..97d2251 100644
--- a/assets/stylesheets/bootstrap/_buttons.scss
+++ b/assets/stylesheets/bootstrap/_buttons.scss
@@ -1,127 +1,137 @@
 //
-// Buttons
-// --------------------------------------------------
-
-
 // Base styles
-// --------------------------------------------------
+//
 
 .btn {
   display: inline-block;
-  margin-bottom: 0; // For input.btn
   font-weight: $btn-font-weight;
   text-align: center;
+  white-space: nowrap;
   vertical-align: middle;
   touch-action: manipulation;
   cursor: pointer;
-  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
-  border: 1px solid transparent;
-  white-space: nowrap;
-  @include button-size($padding-base-vertical, $padding-base-horizontal, $font-size-base, $line-height-base, $btn-border-radius-base);
-  @include user-select(none);
+  user-select: none;
+  border: $border-width solid transparent;
+  @include button-size($btn-padding-y, $btn-padding-x, $font-size-base, $line-height, $btn-border-radius);
+  @include transition(all .2s ease-in-out);
 
   &,
   &:active,
   &.active {
     &:focus,
     &.focus {
-      @include tab-focus;
+      @include tab-focus();
     }
   }
 
-  &:hover,
-  &:focus,
+  @include hover-focus {
+    text-decoration: none;
+  }
   &.focus {
-    color: $btn-default-color;
     text-decoration: none;
   }
 
   &:active,
   &.active {
-    outline: 0;
     background-image: none;
+    outline: 0;
     @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
   }
 
   &.disabled,
-  &[disabled],
+  &:disabled,
   fieldset[disabled] & {
     cursor: $cursor-disabled;
-    @include opacity(.65);
+    opacity: .65;
     @include box-shadow(none);
   }
-
-  // [converter] extracted a& to a.btn
 }
 
-a.btn {
-  &.disabled,
-  fieldset[disabled] & {
-    pointer-events: none; // Future-proof disabling of clicks on `<a>` elements
-  }
+// Future-proof disabling of clicks on `<a>` elements
+a.btn.disaabled,
+fieldset[disabled] a.btn {
+  pointer-events: none;
 }
 
 
+//
 // Alternate buttons
-// --------------------------------------------------
+//
 
-.btn-default {
-  @include button-variant($btn-default-color, $btn-default-bg, $btn-default-border);
-}
 .btn-primary {
   @include button-variant($btn-primary-color, $btn-primary-bg, $btn-primary-border);
 }
-// Success appears as green
-.btn-success {
-  @include button-variant($btn-success-color, $btn-success-bg, $btn-success-border);
+.btn-secondary {
+  @include button-variant($btn-secondary-color, $btn-secondary-bg, $btn-secondary-border);
 }
-// Info appears as blue-green
 .btn-info {
   @include button-variant($btn-info-color, $btn-info-bg, $btn-info-border);
 }
-// Warning appears as orange
+.btn-success {
+  @include button-variant($btn-success-color, $btn-success-bg, $btn-success-border);
+}
 .btn-warning {
   @include button-variant($btn-warning-color, $btn-warning-bg, $btn-warning-border);
 }
-// Danger and error appear as red
 .btn-danger {
   @include button-variant($btn-danger-color, $btn-danger-bg, $btn-danger-border);
 }
 
+// Remove all backgrounds
+.btn-primary-outline {
+  @include button-outline-variant($btn-primary-bg);
+}
+.btn-secondary-outline {
+  @include button-outline-variant($btn-secondary-border);
+}
+.btn-info-outline {
+  @include button-outline-variant($btn-info-bg);
+}
+.btn-success-outline {
+  @include button-outline-variant($btn-success-bg);
+}
+.btn-warning-outline {
+  @include button-outline-variant($btn-warning-bg);
+}
+.btn-danger-outline {
+  @include button-outline-variant($btn-danger-bg);
+}
+
 
+//
 // Link buttons
-// -------------------------
+//
 
 // Make a button look and behave like a link
 .btn-link {
-  color: $link-color;
   font-weight: normal;
+  color: $link-color;
   border-radius: 0;
 
   &,
   &:active,
   &.active,
-  &[disabled],
+  &:disabled,
   fieldset[disabled] & {
     background-color: transparent;
     @include box-shadow(none);
   }
   &,
-  &:hover,
   &:focus,
   &:active {
     border-color: transparent;
   }
-  &:hover,
-  &:focus {
+  @include hover {
+    border-color: transparent;
+  }
+  @include hover-focus {
     color: $link-hover-color;
     text-decoration: $link-hover-decoration;
     background-color: transparent;
   }
-  &[disabled],
+  &:disabled,
   fieldset[disabled] & {
-    &:hover,
-    &:focus {
+    @include hover-focus {
       color: $btn-link-disabled-color;
       text-decoration: none;
     }
@@ -129,24 +139,23 @@ a.btn {
 }
 
 
+//
 // Button Sizes
-// --------------------------------------------------
+//
 
 .btn-lg {
   // line-height: ensure even-numbered height of button next to large input
-  @include button-size($padding-large-vertical, $padding-large-horizontal, $font-size-large, $line-height-large, $btn-border-radius-large);
+  @include button-size($btn-padding-y-lg, $btn-padding-x-lg, $font-size-lg, $line-height-lg, $btn-border-radius-lg);
 }
 .btn-sm {
   // line-height: ensure proper height of button next to small input
-  @include button-size($padding-small-vertical, $padding-small-horizontal, $font-size-small, $line-height-small, $btn-border-radius-small);
-}
-.btn-xs {
-  @include button-size($padding-xs-vertical, $padding-xs-horizontal, $font-size-small, $line-height-small, $btn-border-radius-small);
+  @include button-size($btn-padding-y-sm, $btn-padding-x-sm, $font-size-sm, $line-height-sm, $btn-border-radius-sm);
 }
 
 
+//
 // Block button
-// --------------------------------------------------
+//
 
 .btn-block {
   display: block;
diff --git a/assets/stylesheets/bootstrap/_card.scss b/assets/stylesheets/bootstrap/_card.scss
new file mode 100644
index 0000000..b0bac74
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_card.scss
@@ -0,0 +1,294 @@
+//
+// Base styles
+//
+
+$card-spacer-x:            1.25rem;
+$card-spacer-y:            .75rem;
+$card-border-width:        .0625rem;
+$card-border-radius:       .25rem;
+$card-border-color:        #e5e5e5;
+$card-border-radius-inner: ($card-border-radius - $card-border-width);
+
+$card-cap-bg: #f5f5f5;
+
+.card {
+  position: relative;
+  margin-bottom: $card-spacer-y;
+  border: $card-border-width solid $card-border-color;
+  @include border-radius($card-border-radius);
+}
+
+.card-block {
+  padding: $card-spacer-x;
+}
+
+.card-title {
+  margin-top: 0;
+  margin-bottom: $card-spacer-y;
+}
+
+.card-subtitle {
+  margin-top: -($card-spacer-y / 2);
+  margin-bottom: 0;
+}
+
+.card-text:last-child {
+  margin-bottom: 0;
+}
+
+// .card-actions {
+//   padding: $card-spacer-y $card-spacer-x;
+
+//   .card-link + .card-link {
+//     margin-left: $card-spacer-x;
+//   }
+// }
+
+.card-link {
+  @include hover {
+    text-decoration: none;
+  }
+
+  + .card-link {
+    margin-left: $card-spacer-x;
+  }
+}
+
+@if $enable-rounded {
+  .card {
+    > .list-group:first-child {
+      .list-group-item:first-child {
+        border-radius: $card-border-radius $card-border-radius 0 0;
+      }
+    }
+
+    > .list-group:last-child {
+      .list-group-item:last-child {
+        border-radius: 0 0 $card-border-radius $card-border-radius;
+      }
+    }
+  }
+}
+
+
+//
+// Optional textual caps
+//
+
+.card-header {
+  padding: $card-spacer-y $card-spacer-x;
+  background-color: $card-cap-bg;
+  border-bottom: $card-border-width solid $card-border-color;
+
+  &:first-child {
+    @include border-radius($card-border-radius-inner $card-border-radius-inner 0 0);
+  }
+}
+
+.card-footer {
+  padding: $card-spacer-y $card-spacer-x;
+  background-color: $card-cap-bg;
+  border-top: $card-border-width solid $card-border-color;
+
+  &:last-child {
+    @include border-radius(0 0 $card-border-radius-inner $card-border-radius-inner);
+  }
+}
+
+
+//
+// Background variations
+//
+
+.card-primary {
+  background-color: $brand-primary;
+  border-color: $brand-primary;
+}
+.card-success {
+  background-color: $brand-success;
+  border-color: $brand-success;
+}
+.card-info {
+  background-color: $brand-info;
+  border-color: $brand-info;
+}
+.card-warning {
+  background-color: $brand-warning;
+  border-color: $brand-warning;
+}
+.card-danger {
+  background-color: $brand-danger;
+  border-color: $brand-danger;
+}
+
+
+//
+// Inverse text within a card for use with dark backgrounds
+//
+
+.card-inverse {
+  .card-header,
+  .card-footer {
+    border-bottom: .075rem solid rgba(255,255,255,.2);
+  }
+  .card-header,
+  .card-footer,
+  .card-title,
+  .card-blockquote {
+    color: #fff;
+  }
+  .card-link,
+  .card-text,
+  .card-blockquote > footer {
+    color: rgba(255,255,255,.65);
+  }
+  .card-link {
+    @include hover-focus {
+      color: #fff;
+    }
+  }
+}
+
+
+//
+// Blockquote
+//
+
+.card-blockquote {
+  padding: 0;
+  margin-bottom: 0;
+  border-left: 0;
+}
+
+// Card image
+.card-img {
+  // margin: -1.325rem;
+  @include border-radius(.25rem);
+}
+.card-img-overlay {
+  position: absolute;
+  top: 0;
+  right: 0;
+  bottom: 0;
+  left: 0;
+  padding: 1.25rem;
+}
+
+
+
+// Card image caps
+.card-img-top {
+  @include border-radius(.25rem .25rem 0 0);
+}
+.card-img-bottom {
+  @include border-radius(0 0 .25rem .25rem);
+}
+
+
+//
+// Card set
+//
+
+@if $enable-flex {
+  .card-deck {
+    display: flex;
+    flex-flow: row wrap;
+    margin-right: -.625rem;
+    margin-left: -.625rem;
+
+    .card {
+      flex: 1 0 0;
+      margin-right: .625rem;
+      margin-left: .625rem;
+    }
+  }
+} @else {
+  .card-deck {
+    display: table;
+    table-layout: fixed;
+    border-spacing: 1.25rem 0;
+
+    .card {
+      display: table-cell;
+      width: 1%;
+      vertical-align: top;
+    }
+  }
+  .card-deck-wrapper {
+    margin-right: -1.25rem;
+    margin-left: -1.25rem;
+  }
+}
+
+//
+// Card groups
+//
+
+.card-group {
+  @if $enable-flex {
+    display: flex;
+    flex-flow: row wrap;
+  } @else {
+    display: table;
+    width: 100%;
+    table-layout: fixed;
+  }
+
+  .card {
+    @if $enable-flex {
+      flex: 1 0 0;
+    } @else {
+      display: table-cell;
+      vertical-align: top;
+    }
+
+    + .card {
+      margin-left: 0;
+      border-left: 0;
+    }
+
+    // Handle rounded corners
+    @if $enable-rounded {
+      &:first-child {
+        .card-img-top {
+          border-top-right-radius: 0;
+        }
+        .card-img-bottom {
+          border-bottom-right-radius: 0;
+        }
+      }
+      &:last-child {
+        .card-img-top {
+          border-top-left-radius: 0;
+        }
+        .card-img-bottom {
+          border-bottom-left-radius: 0;
+        }
+      }
+
+      &:not(:first-child):not(:last-child) {
+        border-radius: 0;
+
+        .card-img-top,
+        .card-img-bottom {
+          border-radius: 0;
+        }
+      }
+    }
+  }
+}
+
+
+//
+// Card
+//
+
+.card-columns {
+  column-count: 3;
+  column-gap: 1.25rem;
+
+  .card {
+    display: inline-block;
+    width: 100%; // Don't let them exceed the column width
+  }
+}
diff --git a/assets/stylesheets/bootstrap/_carousel.scss b/assets/stylesheets/bootstrap/_carousel.scss
index f700678..c5a7fdf 100644
--- a/assets/stylesheets/bootstrap/_carousel.scss
+++ b/assets/stylesheets/bootstrap/_carousel.scss
@@ -1,8 +1,3 @@
-//
-// Carousel
-// --------------------------------------------------
-
-
 // Wrapper for the slide container and indicators
 .carousel {
   position: relative;
@@ -10,42 +5,42 @@
 
 .carousel-inner {
   position: relative;
-  overflow: hidden;
   width: 100%;
+  overflow: hidden;
 
-  > .item {
-    display: none;
+  > .carousel-item {
     position: relative;
-    @include transition(.6s ease-in-out left);
+    display: none;
+    transition: .6s ease-in-out left;
 
     // Account for jankitude on images
     > img,
     > a > img {
-      @include img-responsive;
+      @extend .img-responsive;
       line-height: 1;
     }
 
     // WebKit CSS3 transforms for supported devices
     @media all and (transform-3d), (-webkit-transform-3d) {
-      @include transition-transform(0.6s ease-in-out);
-      @include backface-visibility(hidden);
-      @include perspective(1000px);
+      transition: transform .6s ease-in-out;
+      backface-visibility: hidden;
+      perspective: 1000px;
 
       &.next,
       &.active.right {
-        @include translate3d(100%, 0, 0);
         left: 0;
+        transform: translate3d(100%, 0, 0);
       }
       &.prev,
       &.active.left {
-        @include translate3d(-100%, 0, 0);
         left: 0;
+        transform: translate3d(-100%, 0, 0);
       }
       &.next.left,
       &.prev.right,
       &.active {
-        @include translate3d(0, 0, 0);
         left: 0;
+        transform: translate3d(0, 0, 0);
       }
     }
   }
@@ -84,23 +79,24 @@
   > .active.right {
     left: 100%;
   }
-
 }
 
+
+//
 // Left/right controls for nav
-// ---------------------------
+//
 
 .carousel-control {
   position: absolute;
   top: 0;
-  left: 0;
   bottom: 0;
+  left: 0;
   width: $carousel-control-width;
-  @include opacity($carousel-control-opacity);
   font-size: $carousel-control-font-size;
   color: $carousel-control-color;
   text-align: center;
   text-shadow: $carousel-text-shadow;
+  opacity: $carousel-control-opacity;
   // We can't have this transition here because WebKit cancels the carousel
   // animation if you trip this while in the middle of another animation.
 
@@ -109,62 +105,54 @@
     @include gradient-horizontal($start-color: rgba(0,0,0,.5), $end-color: rgba(0,0,0,.0001));
   }
   &.right {
-    left: auto;
     right: 0;
+    left: auto;
     @include gradient-horizontal($start-color: rgba(0,0,0,.0001), $end-color: rgba(0,0,0,.5));
   }
 
   // Hover/focus state
-  &:hover,
-  &:focus {
-    outline: 0;
+  @include hover-focus {
     color: $carousel-control-color;
     text-decoration: none;
-    @include opacity(.9);
+    outline: 0;
+    opacity: .9;
   }
 
   // Toggles
   .icon-prev,
-  .icon-next,
-  .glyphicon-chevron-left,
-  .glyphicon-chevron-right {
+  .icon-next {
     position: absolute;
     top: 50%;
-    margin-top: -10px;
     z-index: 5;
     display: inline-block;
+    width: 20px;
+    height: 20px;
+    margin-top: -10px;
+    font-family: serif;
+    line-height: 1;
   }
-  .icon-prev,
-  .glyphicon-chevron-left {
+  .icon-prev {
     left: 50%;
     margin-left: -10px;
   }
-  .icon-next,
-  .glyphicon-chevron-right {
+  .icon-next {
     right: 50%;
     margin-right: -10px;
   }
-  .icon-prev,
-  .icon-next {
-    width:  20px;
-    height: 20px;
-    line-height: 1;
-    font-family: serif;
-  }
-
 
   .icon-prev {
     &:before {
-      content: '\2039';// SINGLE LEFT-POINTING ANGLE QUOTATION MARK (U+2039)
+      content: "\2039";// SINGLE LEFT-POINTING ANGLE QUOTATION MARK (U+2039)
     }
   }
   .icon-next {
     &:before {
-      content: '\203a';// SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (U+203A)
+      content: "\203a";// SINGLE RIGHT-POINTING ANGLE QUOTATION MARK (U+203A)
     }
   }
 }
 
+
 // Optional indicator pips
 //
 // Add an unordered list with the following class and add a list item for each
@@ -176,68 +164,65 @@
   left: 50%;
   z-index: 15;
   width: 60%;
-  margin-left: -30%;
   padding-left: 0;
-  list-style: none;
+  margin-left: -30%;
   text-align: center;
+  list-style: none;
 
   li {
     display: inline-block;
-    width:  10px;
+    width: 10px;
     height: 10px;
     margin: 1px;
     text-indent: -999px;
-    border: 1px solid $carousel-indicator-border-color;
-    border-radius: 10px;
     cursor: pointer;
-
-    // IE8-9 hack for event handling
+    // IE9 hack for event handling
     //
-    // Internet Explorer 8-9 does not support clicks on elements without a set
+    // Internet Explorer 9 does not support clicks on elements without a set
     // `background-color`. We cannot use `filter` since that's not viewed as a
     // background color by the browser. Thus, a hack is needed.
-    // See https://developer.mozilla.org/en-US/docs/Web/Events/click#Internet_Explorer
-    //
-    // For IE8, we set solid black as it doesn't support `rgba()`. For IE9, we
-    // set alpha transparency for the best results possible.
-    background-color: #000 \9; // IE8
     background-color: rgba(0,0,0,0); // IE9
+    border: 1px solid $carousel-indicator-border-color;
+    border-radius: 10px;
   }
   .active {
-    margin: 0;
-    width:  12px;
+    width: 12px;
     height: 12px;
+    margin: 0;
     background-color: $carousel-indicator-active-bg;
   }
 }
 
+
 // Optional captions
-// -----------------------------
-// Hidden by default for smaller viewports
+//
+// Hidden by default for smaller viewports.
+
 .carousel-caption {
   position: absolute;
-  left: 15%;
   right: 15%;
   bottom: 20px;
+  left: 15%;
   z-index: 10;
   padding-top: 20px;
   padding-bottom: 20px;
   color: $carousel-caption-color;
   text-align: center;
   text-shadow: $carousel-text-shadow;
-  & .btn {
+
+  .btn {
     text-shadow: none; // No shadow for button elements in carousel-caption
   }
 }
 
 
-// Scale up controls for tablets and up
-@media screen and (min-width: $screen-sm-min) {
+//
+// Responsive variations
+//
 
+@include media-breakpoint-up(sm) {
   // Scale up the controls a smidge
   .carousel-control {
-    .glyphicon-chevron-left,
-    .glyphicon-chevron-right,
     .icon-prev,
     .icon-next {
       width: 30px;
@@ -245,11 +230,9 @@
       margin-top: -15px;
       font-size: 30px;
     }
-    .glyphicon-chevron-left,
     .icon-prev {
       margin-left: -15px;
     }
-    .glyphicon-chevron-right,
     .icon-next {
       margin-right: -15px;
     }
@@ -257,8 +240,8 @@
 
   // Show and left align the captions
   .carousel-caption {
-    left: 20%;
     right: 20%;
+    left: 20%;
     padding-bottom: 30px;
   }
 
diff --git a/assets/stylesheets/bootstrap/_close.scss b/assets/stylesheets/bootstrap/_close.scss
index 3b74d8a..89e68a3 100644
--- a/assets/stylesheets/bootstrap/_close.scss
+++ b/assets/stylesheets/bootstrap/_close.scss
@@ -1,8 +1,3 @@
-//
-// Close icons
-// --------------------------------------------------
-
-
 .close {
   float: right;
   font-size: ($font-size-base * 1.5);
@@ -10,17 +5,14 @@
   line-height: 1;
   color: $close-color;
   text-shadow: $close-text-shadow;
-  @include opacity(.2);
+  opacity: .2;
 
-  &:hover,
-  &:focus {
+  @include hover-focus {
     color: $close-color;
     text-decoration: none;
     cursor: pointer;
-    @include opacity(.5);
+    opacity: .5;
   }
-
-  // [converter] extracted button& to button.close
 }
 
 // Additional properties for button version
diff --git a/assets/stylesheets/bootstrap/_code.scss b/assets/stylesheets/bootstrap/_code.scss
index caa5f06..0de67d9 100644
--- a/assets/stylesheets/bootstrap/_code.scss
+++ b/assets/stylesheets/bootstrap/_code.scss
@@ -1,8 +1,3 @@
-//
-// Code (inline and block)
-// --------------------------------------------------
-
-
 // Inline and block code styles
 code,
 kbd,
@@ -13,50 +8,44 @@ samp {
 
 // Inline code
 code {
-  padding: 2px 4px;
+  padding: .2rem .4rem;
   font-size: 90%;
   color: $code-color;
   background-color: $code-bg;
-  border-radius: $border-radius-base;
+  @include border-radius($border-radius);
 }
 
 // User input typically entered via keyboard
 kbd {
-  padding: 2px 4px;
+  padding: .2rem .4rem;
   font-size: 90%;
   color: $kbd-color;
   background-color: $kbd-bg;
-  border-radius: $border-radius-small;
-  box-shadow: inset 0 -1px 0 rgba(0,0,0,.25);
+  @include border-radius($border-radius-sm);
+  @include box-shadow(inset 0 -.1rem 0 rgba(0,0,0,.25));
 
   kbd {
     padding: 0;
     font-size: 100%;
     font-weight: bold;
-    box-shadow: none;
+    @include box-shadow(none);
   }
 }
 
 // Blocks of code
 pre {
   display: block;
-  padding: (($line-height-computed - 1) / 2);
-  margin: 0 0 ($line-height-computed / 2);
-  font-size: ($font-size-base - 1); // 14px to 13px
-  line-height: $line-height-base;
-  word-break: break-all;
-  word-wrap: break-word;
+  margin-top: 0;
+  margin-bottom: 1rem;
+  font-size: 90%;
+  line-height: $line-height;
   color: $pre-color;
-  background-color: $pre-bg;
-  border: 1px solid $pre-border-color;
-  border-radius: $border-radius-base;
 
   // Account for some code outputs that place code tags in pre tags
   code {
     padding: 0;
     font-size: inherit;
     color: inherit;
-    white-space: pre-wrap;
     background-color: transparent;
     border-radius: 0;
   }
diff --git a/assets/stylesheets/bootstrap/_component-animations.scss b/assets/stylesheets/bootstrap/_component-animations.scss
deleted file mode 100644
index ca3b43c..0000000
--- a/assets/stylesheets/bootstrap/_component-animations.scss
+++ /dev/null
@@ -1,37 +0,0 @@
-//
-// Component animations
-// --------------------------------------------------
-
-// Heads up!
-//
-// We don't use the `.opacity()` mixin here since it causes a bug with text
-// fields in IE7-8. Source: https://github.com/twbs/bootstrap/pull/3552.
-
-.fade {
-  opacity: 0;
-  @include transition(opacity .15s linear);
-  &.in {
-    opacity: 1;
-  }
-}
-
-.collapse {
-  display: none;
-
-  &.in      { display: block; }
-  // [converter] extracted tr&.in to tr.collapse.in
-  // [converter] extracted tbody&.in to tbody.collapse.in
-}
-
-tr.collapse.in    { display: table-row; }
-
-tbody.collapse.in { display: table-row-group; }
-
-.collapsing {
-  position: relative;
-  height: 0;
-  overflow: hidden;
-  @include transition-property(height, visibility);
-  @include transition-duration(.35s);
-  @include transition-timing-function(ease);
-}
diff --git a/assets/stylesheets/bootstrap/_custom-forms.scss b/assets/stylesheets/bootstrap/_custom-forms.scss
new file mode 100644
index 0000000..ec211ac
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_custom-forms.scss
@@ -0,0 +1,226 @@
+// Embedded icons from Open Iconic.
+// Released under MIT and copyright 2014 Waybury.
+// http://useiconic.com/open
+
+
+// Checkboxes and radios
+//
+// Base class takes care of all the key behavioral aspects.
+
+.c-input {
+  position: relative;
+  display: inline;
+  padding-left: 1.5rem;
+  color: #555;
+  cursor: pointer;
+
+  > input {
+    position: absolute;
+    z-index: -1; // Put the input behind the label so it doesn't overlay text
+    opacity: 0;
+
+    &:focus ~ .c-indicator {
+      @include box-shadow(0 0 0 .075rem #fff, 0 0 0 .2rem #0074d9);
+    }
+
+    &:checked ~ .c-indicator {
+      color: #fff;
+      background-color: #0074d9;
+      @include box-shadow(none);
+    }
+
+    &:active ~ .c-indicator {
+      color: #fff;
+      background-color: #84c6ff;
+      @include box-shadow(none);
+    }
+  }
+
+  + .c-input {
+    margin-left: 1rem;
+  }
+}
+
+// Custom indicator
+//
+// Generates a shadow element to create our makeshift checkbox/radio background.
+
+.c-indicator {
+  position: absolute;
+  top: 0;
+  left: 0;
+  display: block;
+  width: 1rem;
+  height: 1rem;
+  font-size: 65%;
+  line-height: 1rem;
+  color: #eee;
+  text-align: center;
+  user-select: none;
+  background-color: #eee;
+  background-repeat: no-repeat;
+  background-position: center center;
+  background-size: 50% 50%;
+  @include box-shadow(inset 0 .125rem .125rem rgba(0,0,0,.1));
+}
+
+// Checkboxes
+//
+// Tweak just a few things for checkboxes.
+
+.c-checkbox {
+  .c-indicator {
+    border-radius: .25rem;
+  }
+
+  input:checked ~ .c-indicator {
+    background-image: url(data:image/svg+xml;base64,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);
+  }
+
+  input:indeterminate ~ .c-indicator {
+    background-color: #0074d9;
+    background-image: url(data:image/svg+xml;base64,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);
+    @include box-shadow(none);
+  }
+}
+
+// Radios
+//
+// Tweak just a few things for radios.
+
+.c-radio {
+  .c-indicator {
+    border-radius: 50%;
+  }
+
+  input:checked ~ .c-indicator {
+    background-image: url(data:image/svg+xml;base64,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);
+  }
+}
+
+
+// Layout options
+//
+// By default radios and checkboxes are `inline-block` with no additional spacing
+// set. Use these optional classes to tweak the layout.
+
+.c-inputs-stacked {
+  .c-input {
+    display: inline;
+
+    &:after {
+      display: block;
+      margin-bottom: .25rem;
+      content: "";
+    }
+
+    + .c-input {
+      margin-left: 0;
+    }
+  }
+}
+
+
+// Select
+//
+// Replaces the browser default select with a custom one, mostly pulled from
+// http://primercss.io.
+
+.c-select {
+  display: inline-block;
+  max-width: 100%;
+  padding: .375rem 1.75rem .375rem .75rem;
+  vertical-align: middle;
+	background: #fff url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAUCAMAAACzvE1FAAAADFBMVEUzMzMzMzMzMzMzMzMKAG/3AAAAA3RSTlMAf4C/aSLHAAAAPElEQVR42q3NMQ4AIAgEQTn//2cLdRKppSGzBYwzVXvznNWs8C58CiussPJj8h6NwgorrKRdTvuV9v16Afn0AYFOB7aYAAAAAElFTkSuQmCC) no-repeat right .75rem center;
+  background-size: 8px 10px;
+  border: 1px solid $input-border;
+
+  // Have to include vendor prefixes as the `appearance` property isn't part of the CSS spec.
+  -webkit-appearance: none;
+  -moz-appearance: none;
+  appearance: none;
+
+  // IE9 hacks to hide the background-image and reduce padding
+  padding-right: .75rem \9;
+  background-image: none \9;
+
+  &:focus {
+    outline: none;
+    border-color: #51a7e8;
+    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.075), 0 0 5px rgba(81, 167, 232, 0.5);
+  }
+
+  // Hides the default caret in IE11
+  &::-ms-expand {
+    opacity: 0;
+  }
+}
+
+.c-select-sm {
+  padding-top: 3px;
+  padding-bottom: 3px;
+  font-size: 12px;
+
+  &:not([multiple]) {
+    height: 26px;
+    min-height: 26px;
+  }
+}
+
+
+// File
+//
+// Custom file input.
+
+.file {
+  position: relative;
+  display: inline-block;
+  height: 2.5rem;
+  cursor: pointer;
+}
+.file input {
+  min-width: 14rem;
+  margin: 0;
+  filter: alpha(opacity=0);
+  opacity: 0;
+}
+.file-custom {
+  position: absolute;
+  top: 0;
+  right: 0;
+  left: 0;
+  z-index: 5;
+  height: 2.5rem;
+  padding: .5rem 1rem;
+  line-height: 1.5;
+  color: #555;
+  user-select: none;
+  background-color: #fff;
+  border: .075rem solid #ddd;
+  border-radius: .25rem;
+  box-shadow: inset 0 .2rem .4rem rgba(0,0,0,.05);
+}
+.file-custom:after {
+  content: "Choose file...";
+}
+.file-custom:before {
+  position: absolute;
+  top: -.075rem;
+  right: -.075rem;
+  bottom: -.075rem;
+  z-index: 6;
+  display: block;
+  height: 2.5rem;
+  padding: .5rem 1rem;
+  line-height: 1.5;
+  color: #555;
+  content: "Browse";
+  background-color: #eee;
+  border: .075rem solid #ddd;
+  border-radius: 0 .25rem .25rem 0;
+}
+
+// Focus state
+.file input:focus ~ .file-custom {
+  box-shadow: 0 0 0 .075rem #fff, 0 0 0 .2rem #0074d9;
+}
diff --git a/assets/stylesheets/bootstrap/_dropdowns.scss b/assets/stylesheets/bootstrap/_dropdown.scss
index aac8459..d3588d2 100644
--- a/assets/stylesheets/bootstrap/_dropdowns.scss
+++ b/assets/stylesheets/bootstrap/_dropdown.scss
@@ -1,30 +1,27 @@
-//
-// Dropdown menus
-// --------------------------------------------------
-
-
-// Dropdown arrow/caret
-.caret {
-  display: inline-block;
-  width: 0;
-  height: 0;
-  margin-left: 2px;
-  vertical-align: middle;
-  border-top:   $caret-width-base dashed;
-  border-top:   $caret-width-base solid \9; // IE8
-  border-right: $caret-width-base solid transparent;
-  border-left:  $caret-width-base solid transparent;
-}
-
 // The dropdown wrapper (div)
 .dropup,
 .dropdown {
   position: relative;
 }
 
-// Prevent the focus on the dropdown toggle when closing dropdowns
-.dropdown-toggle:focus {
-  outline: 0;
+.dropdown-toggle {
+  // Generate the caret automatically
+  &:after {
+    display: inline-block;
+    width: 0;
+    height: 0;
+    margin-left: .25rem;
+    vertical-align: middle;
+    content: "";
+    border-top: $caret-width solid;
+    border-right: $caret-width solid transparent;
+    border-left: $caret-width solid transparent;
+  }
+
+  // Prevent the focus on the dropdown toggle when closing dropdowns
+  &:focus {
+    outline: 0;
+  }
 }
 
 // The dropdown menu (ul)
@@ -38,82 +35,69 @@
   min-width: 160px;
   padding: 5px 0;
   margin: 2px 0 0; // override default ul
-  list-style: none;
   font-size: $font-size-base;
   text-align: left; // Ensures proper alignment if parent has it changed (e.g., modal footer)
+  list-style: none;
   background-color: $dropdown-bg;
-  border: 1px solid $dropdown-fallback-border; // IE8 fallback
+  background-clip: padding-box;
   border: 1px solid $dropdown-border;
-  border-radius: $border-radius-base;
+  @include border-radius($border-radius);
   @include box-shadow(0 6px 12px rgba(0,0,0,.175));
-  background-clip: padding-box;
-
-  // Aligns the dropdown menu to right
-  //
-  // Deprecated as of 3.1.0 in favor of `.dropdown-menu-[dir]`
-  &.pull-right {
-    right: 0;
-    left: auto;
-  }
-
-  // Dividers (basically an hr) within the dropdown
-  .divider {
-    @include nav-divider($dropdown-divider-bg);
-  }
+}
 
-  // Links within the dropdown menu
-  > li > a {
-    display: block;
-    padding: 3px 20px;
-    clear: both;
-    font-weight: normal;
-    line-height: $line-height-base;
-    color: $dropdown-link-color;
-    white-space: nowrap; // prevent links from randomly breaking onto new lines
-  }
+// Dividers (basically an hr) within the dropdown
+.dropdown-divider {
+  @include nav-divider($dropdown-divider-bg);
 }
 
-// Hover/Focus state
-.dropdown-menu > li > a {
-  &:hover,
-  &:focus {
-    text-decoration: none;
+// Links, buttons, and more within the dropdown menu
+.dropdown-item {
+  display: block;
+  padding: 3px 20px;
+  clear: both;
+  font-weight: normal;
+  line-height: $line-height;
+  color: $dropdown-link-color;
+  white-space: nowrap; // prevent links from randomly breaking onto new lines
+
+  // For `<button>`s
+  text-align: inherit;
+  width: 100%;
+  background: none;
+  border: 0;
+
+  @include hover-focus {
     color: $dropdown-link-hover-color;
+    text-decoration: none;
     background-color: $dropdown-link-hover-bg;
   }
-}
 
-// Active state
-.dropdown-menu > .active > a {
-  &,
-  &:hover,
-  &:focus {
-    color: $dropdown-link-active-color;
-    text-decoration: none;
-    outline: 0;
-    background-color: $dropdown-link-active-bg;
+  // Active state
+  &.active {
+    @include plain-hover-focus {
+      color: $dropdown-link-active-color;
+      text-decoration: none;
+      background-color: $dropdown-link-active-bg;
+      outline: 0;
+    }
   }
-}
-
-// Disabled state
-//
-// Gray out text and ensure the hover/focus state remains gray
 
-.dropdown-menu > .disabled > a {
-  &,
-  &:hover,
-  &:focus {
-    color: $dropdown-link-disabled-color;
-  }
+  // Disabled state
+  //
+  // Gray out text and ensure the hover/focus state remains gray
+  &.disabled {
+    @include plain-hover-focus {
+      color: $dropdown-link-disabled-color;
+    }
 
-  // Nuke hover/focus effects
-  &:hover,
-  &:focus {
-    text-decoration: none;
-    background-color: transparent;
-    background-image: none; // Remove CSS gradient
-    @include reset-filter;
-    cursor: $cursor-disabled;
+    // Nuke hover/focus effects
+    @include hover-focus {
+      text-decoration: none;
+      cursor: $cursor-disabled;
+      background-color: transparent;
+      background-image: none; // Remove CSS gradient
+      @include reset-filter();
+    }
   }
 }
 
@@ -135,8 +119,8 @@
 // Add extra class to `.dropdown-menu` to flip the alignment of the dropdown
 // menu with the parent.
 .dropdown-menu-right {
-  left: auto; // Reset the default from `.dropdown-menu`
   right: 0;
+  left: auto; // Reset the default from `.dropdown-menu`
 }
 // With v3, we enabled auto-flipping if you have a dropdown within a right
 // aligned nav component. To enable the undoing of that, we provide an override
@@ -145,16 +129,16 @@
 // This is only for left-aligning a dropdown menu within a `.navbar-right` or
 // `.pull-right` nav component.
 .dropdown-menu-left {
-  left: 0;
   right: auto;
+  left: 0;
 }
 
 // Dropdown section headers
 .dropdown-header {
   display: block;
   padding: 3px 20px;
-  font-size: $font-size-small;
-  line-height: $line-height-base;
+  font-size: $font-size-sm;
+  line-height: $line-height;
   color: $dropdown-header-color;
   white-space: nowrap; // as with > li > a
 }
@@ -162,10 +146,10 @@
 // Backdrop to catch body clicks on mobile, etc.
 .dropdown-backdrop {
   position: fixed;
-  left: 0;
+  top: 0;
   right: 0;
   bottom: 0;
-  top: 0;
+  left: 0;
   z-index: ($zindex-dropdown - 10);
 }
 
@@ -184,11 +168,11 @@
 .navbar-fixed-bottom .dropdown {
   // Reverse the caret
   .caret {
-    border-top: 0;
-    border-bottom: $caret-width-base dashed;
-    border-bottom: $caret-width-base solid \9; // IE8
     content: "";
+    border-top: 0;
+    border-bottom: $caret-width solid;
   }
+
   // Different positioning for bottom up menu
   .dropdown-menu {
     top: auto;
@@ -196,21 +180,3 @@
     margin-bottom: 2px;
   }
 }
-
-
-// Component alignment
-//
-// Reiterate per navbar.less and the modified component alignment there.
-
-@media (min-width: $grid-float-breakpoint) {
-  .navbar-right {
-    .dropdown-menu {
-      right: 0; left: auto;
-    }
-    // Necessary for overrides of the default right aligned menu.
-    // Will remove come v4 in all likelihood.
-    .dropdown-menu-left {
-      left: 0; right: auto;
-    }
-  }
-}
diff --git a/assets/stylesheets/bootstrap/_forms.scss b/assets/stylesheets/bootstrap/_forms.scss
index de4befd..9888da1 100644
--- a/assets/stylesheets/bootstrap/_forms.scss
+++ b/assets/stylesheets/bootstrap/_forms.scss
@@ -1,183 +1,96 @@
 //
-// Forms
-// --------------------------------------------------
-
-
-// Normalize non-controls
-//
-// Restyle and baseline non-control form elements.
-
-fieldset {
-  padding: 0;
-  margin: 0;
-  border: 0;
-  // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
-  // so we reset that to ensure it behaves more like a standard block element.
-  // See https://github.com/twbs/bootstrap/issues/12359.
-  min-width: 0;
-}
-
-legend {
-  display: block;
-  width: 100%;
-  padding: 0;
-  margin-bottom: $line-height-computed;
-  font-size: ($font-size-base * 1.5);
-  line-height: inherit;
-  color: $legend-color;
-  border: 0;
-  border-bottom: 1px solid $legend-border-color;
-}
-
-label {
-  display: inline-block;
-  max-width: 100%; // Force IE8 to wrap long content (see https://github.com/twbs/bootstrap/issues/13141)
-  margin-bottom: 5px;
-  font-weight: bold;
-}
-
-
-// Normalize form controls
+// Textual form controls
 //
-// While most of our form styles require extra classes, some basic normalization
-// is required to ensure optimum display with or without those classes to better
-// address browser inconsistencies.
-
-// Override content-box in Normalize (* isn't specific enough)
-input[type="search"] {
-  @include box-sizing(border-box);
-}
-
-// Position radios and checkboxes better
-input[type="radio"],
-input[type="checkbox"] {
-  margin: 4px 0 0;
-  margin-top: 1px \9; // IE8-9
-  line-height: normal;
-}
-
-input[type="file"] {
-  display: block;
-}
-
-// Make range inputs behave like textual form controls
-input[type="range"] {
-  display: block;
-  width: 100%;
-}
-
-// Make multiple select elements height not fixed
-select[multiple],
-select[size] {
-  height: auto;
-}
-
-// Focus for file, radio, and checkbox
-input[type="file"]:focus,
-input[type="radio"]:focus,
-input[type="checkbox"]:focus {
-  @include tab-focus;
-}
-
-// Adjust output element
-output {
-  display: block;
-  padding-top: ($padding-base-vertical + 1);
-  font-size: $font-size-base;
-  line-height: $line-height-base;
-  color: $input-color;
-}
-
-
-// Common form controls
-//
-// Shared size and type resets for form controls. Apply `.form-control` to any
-// of the following form controls:
-//
-// select
-// textarea
-// input[type="text"]
-// input[type="password"]
-// input[type="datetime"]
-// input[type="datetime-local"]
-// input[type="date"]
-// input[type="month"]
-// input[type="time"]
-// input[type="week"]
-// input[type="number"]
-// input[type="email"]
-// input[type="url"]
-// input[type="search"]
-// input[type="tel"]
-// input[type="color"]
 
 .form-control {
   display: block;
   width: 100%;
-  height: $input-height-base; // Make inputs at least the height of their button counterpart (base line-height + padding + border)
-  padding: $padding-base-vertical $padding-base-horizontal;
+  // // Make inputs at least the height of their button counterpart (base line-height + padding + border)
+  // height: $input-height;
+  padding: $input-padding-y $input-padding-x;
   font-size: $font-size-base;
-  line-height: $line-height-base;
+  line-height: $line-height;
   color: $input-color;
   background-color: $input-bg;
-  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
-  border: 1px solid $input-border;
-  border-radius: $input-border-radius; // Note: This has no effect on <select>s in some browsers, due to the limited stylability of <select>s in CSS.
-  @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075));
+  // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214.
+  background-image: none;
+  border: $border-width solid $input-border;
+   // Note: This has no effect on <select>s in some browsers, due to the limited stylability of `<select>`s in CSS.
+  @include border-radius($input-border-radius);
+  @include box-shadow($input-box-shadow);
   @include transition(border-color ease-in-out .15s, box-shadow ease-in-out .15s);
 
+  // Make inputs at least the height of their button counterpart (base line-height + padding + border).
+  // Only apply the height to textual inputs and some selcts.
+  // &:not(textarea),
+  // &:not(select[size]),
+  // &:not(select[multiple]) {
+  //   height: $input-height;
+  // }
+
+  // Unstyle the caret on `<select>`s in IE10+.
+  &::-ms-expand {
+    background-color: transparent;
+    border: 0;
+  }
+
   // Customize the `:focus` state to imitate native WebKit styles.
-  @include form-control-focus;
+  @include form-control-focus();
 
   // Placeholder
-  @include placeholder;
+  &::placeholder {
+    color: $input-color-placeholder;
+    // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526.
+    opacity: 1;
+  }
 
   // Disabled and read-only inputs
   //
   // HTML5 says that controls under a fieldset > legend:first-child won't be
   // disabled if the fieldset is disabled. Due to implementation difficulty, we
   // don't honor that edge case; we style them as disabled anyway.
-  &[disabled],
+  &:disabled,
   &[readonly],
   fieldset[disabled] & {
     background-color: $input-bg-disabled;
-    opacity: 1; // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655
+    // iOS fix for unreadable disabled content; see https://github.com/twbs/bootstrap/issues/11655.
+    opacity: 1;
   }
 
   &[disabled],
   fieldset[disabled] & {
     cursor: $cursor-disabled;
   }
-
-  // [converter] extracted textarea& to textarea.form-control
 }
 
-// Reset height for `textarea`s
-textarea.form-control {
-  height: auto;
+
+// Make file inputs better match text inputs by forcing them to new lines.
+.form-control-file,
+.form-control-range {
+  display: block;
 }
 
 
-// Search inputs in iOS
 //
-// This overrides the extra rounded corners on search inputs in iOS so that our
-// `.form-control` class can properly style them. Note that this cannot simply
-// be added to `.form-control` as it's not specific enough. For details, see
-// https://github.com/twbs/bootstrap/issues/11586.
+// Labels
+//
 
-input[type="search"] {
-  -webkit-appearance: none;
+// For use with horizontal and inline forms, when you need the label text to
+// align with the form controls.
+.form-control-label {
+  padding: ($input-padding-y + $border-width) $input-padding-x;
+  margin-bottom: 0; // Override the `<label>` default
 }
 
 
+// Todo: clear this up
+
 // Special styles for iOS temporal inputs
 //
 // In Mobile Safari, setting `display: block` on temporal inputs causes the
 // text within the input to become vertically misaligned. As a workaround, we
 // set a pixel line-height that matches the given height of the input, but only
 // for Safari. See https://bugs.webkit.org/show_bug.cgi?id=139848
-//
-// Note that as of 8.3, iOS doesn't support `datetime` or `week`.
 
 @media screen and (-webkit-min-device-pixel-ratio: 0) {
   input[type="date"],
@@ -185,22 +98,68 @@ input[type="search"] {
   input[type="datetime-local"],
   input[type="month"] {
     &.form-control {
-      line-height: $input-height-base;
+      line-height: $input-height;
     }
 
     &.input-sm,
-    .input-group-sm & {
-      line-height: $input-height-small;
+    .input-group-sm &.form-control {
+      line-height: $input-height-sm;
     }
 
     &.input-lg,
-    .input-group-lg & {
-      line-height: $input-height-large;
+    .input-group-lg &.form-control {
+      line-height: $input-height-lg;
     }
   }
 }
 
 
+// Static form control text
+//
+// Apply class to an element to make any string of text align with labels in a
+// horizontal form layout.
+
+.form-control-static {
+  min-height: $input-height;
+  // Size it appropriately next to real form controls
+  padding-top: ($input-padding-y + $border-width);
+  padding-bottom: ($input-padding-y + $border-width);
+  // Remove default margin from `p`
+  margin-bottom: 0;
+
+  &.form-control-sm,
+  &.form-control-lg {
+    padding-right: 0;
+    padding-left: 0;
+  }
+}
+
+
+// Form control sizing
+//
+// Build on `.form-control` with modifier classes to decrease or increase the
+// height and font-size of form controls.
+//
+// The `.form-group-* form-control` variations are sadly duplicated to avoid the
+// issue documented in https://github.com/twbs/bootstrap/issues/15074.
+
+.form-control-sm {
+  // height: $input-height-sm;
+  padding: $input-padding-y-sm $input-padding-x-sm;
+  font-size: $font-size-sm;
+  line-height: $line-height-sm;
+  border-radius: $input-border-radius-sm;
+}
+
+.form-control-lg {
+  // height: $input-height-lg;
+  padding: $input-padding-y-lg $input-padding-x-lg;
+  font-size: $font-size-lg;
+  line-height: $line-height-lg;
+  border-radius: $input-border-radius-lg;
+}
+
+
 // Form groups
 //
 // Designed to help with the organization and spacing of vertical forms. For
@@ -219,15 +178,19 @@ input[type="search"] {
 .checkbox {
   position: relative;
   display: block;
-  margin-top: 10px;
-  margin-bottom: 10px;
+  // margin-top:    ($spacer * .75);
+  margin-bottom: ($spacer * .75);
 
   label {
-    min-height: $line-height-computed; // Ensure the input doesn't jump when there is no text
-    padding-left: 20px;
+    padding-left: 1.25rem;
     margin-bottom: 0;
     font-weight: normal;
     cursor: pointer;
+
+    // When there's no labels, don't position the input.
+    input:only-child {
+      position: static;
+    }
   }
 }
 .radio input[type="radio"],
@@ -235,13 +198,15 @@ input[type="search"] {
 .checkbox input[type="checkbox"],
 .checkbox-inline input[type="checkbox"] {
   position: absolute;
-  margin-left: -20px;
-  margin-top: 4px \9;
+  margin-top: .25rem;
+  // margin-top: 4px \9;
+  margin-left: -1.25rem;
 }
 
 .radio + .radio,
 .checkbox + .checkbox {
-  margin-top: -5px; // Move up sibling radios or checkboxes for tighter spacing
+  // Move up sibling radios or checkboxes for tighter spacing
+  margin-top: -.25rem;
 }
 
 // Radios and checkboxes on same line
@@ -249,16 +214,16 @@ input[type="search"] {
 .checkbox-inline {
   position: relative;
   display: inline-block;
-  padding-left: 20px;
+  padding-left: 1.25rem;
   margin-bottom: 0;
-  vertical-align: middle;
   font-weight: normal;
+  vertical-align: middle;
   cursor: pointer;
 }
 .radio-inline + .radio-inline,
 .checkbox-inline + .checkbox-inline {
   margin-top: 0;
-  margin-left: 10px; // space out consecutive inline controls
+  margin-left: .75rem;
 }
 
 // Apply same disabled cursor tweak as for inputs
@@ -267,7 +232,7 @@ input[type="search"] {
 // Note: Neither radios nor checkboxes can be readonly.
 input[type="radio"],
 input[type="checkbox"] {
-  &[disabled],
+  &:disabled,
   &.disabled,
   fieldset[disabled] & {
     cursor: $cursor-disabled;
@@ -293,163 +258,121 @@ input[type="checkbox"] {
 }
 
 
-// Static form control text
+// Form control feedback states
 //
-// Apply class to a `p` element to make any string of text align with labels in
-// a horizontal form layout.
-
-.form-control-static {
-  // Size it appropriately next to real form controls
-  padding-top: ($padding-base-vertical + 1);
-  padding-bottom: ($padding-base-vertical + 1);
-  // Remove default margin from `p`
-  margin-bottom: 0;
-  min-height: ($line-height-computed + $font-size-base);
+// Apply contextual and semantic states to individual form controls.
 
-  &.input-lg,
-  &.input-sm {
-    padding-left: 0;
-    padding-right: 0;
-  }
+.form-control-success,
+.form-control-warning,
+.form-control-error {
+  padding-right: ($input-padding-x * 3);
+  background-position: center right ($input-height * .25);
+  background-size: ($input-height * .65) ($input-height * .65);
+  background-repeat: no-repeat;
 }
 
+// Form validation states
+.has-success {
+  @include form-control-validation(success, $brand-success);
 
-// Form control sizing
-//
-// Build on `.form-control` with modifier classes to decrease or increase the
-// height and font-size of form controls.
-//
-// The `.form-group-* form-control` variations are sadly duplicated to avoid the
-// issue documented in https://github.com/twbs/bootstrap/issues/15074.
-
-@include input-size('.input-sm', $input-height-small, $padding-small-vertical, $padding-small-horizontal, $font-size-small, $line-height-small, $input-border-radius-small);
-.form-group-sm {
-  .form-control {
-    height: $input-height-small;
-    padding: $padding-small-vertical $padding-small-horizontal;
-    font-size: $font-size-small;
-    line-height: $line-height-small;
-    border-radius: $input-border-radius-small;
-  }
-  select.form-control {
-    height: $input-height-small;
-    line-height: $input-height-small;
-  }
-  textarea.form-control,
-  select[multiple].form-control {
-    height: auto;
-  }
-  .form-control-static {
-    height: $input-height-small;
-    min-height: ($line-height-computed + $font-size-small);
-    padding: ($padding-small-vertical + 1) $padding-small-horizontal;
-    font-size: $font-size-small;
-    line-height: $line-height-small;
+  .form-control-success {
+    background-image: url($form-icon-success);
   }
 }
 
-@include input-size('.input-lg', $input-height-large, $padding-large-vertical, $padding-large-horizontal, $font-size-large, $line-height-large, $input-border-radius-large);
-.form-group-lg {
-  .form-control {
-    height: $input-height-large;
-    padding: $padding-large-vertical $padding-large-horizontal;
-    font-size: $font-size-large;
-    line-height: $line-height-large;
-    border-radius: $input-border-radius-large;
-  }
-  select.form-control {
-    height: $input-height-large;
-    line-height: $input-height-large;
-  }
-  textarea.form-control,
-  select[multiple].form-control {
-    height: auto;
-  }
-  .form-control-static {
-    height: $input-height-large;
-    min-height: ($line-height-computed + $font-size-large);
-    padding: ($padding-large-vertical + 1) $padding-large-horizontal;
-    font-size: $font-size-large;
-    line-height: $line-height-large;
+.has-warning {
+  @include form-control-validation(warning, $brand-warning);
+
+  .form-control-warning {
+    background-image: url($form-icon-warning);
   }
 }
 
+.has-error {
+  @include form-control-validation(error, $brand-danger);
 
-// Form control feedback states
-//
-// Apply contextual and semantic states to individual form controls.
-
-.has-feedback {
-  // Enable absolute positioning
-  position: relative;
-
-  // Ensure icons don't overlap text
-  .form-control {
-    padding-right: ($input-height-base * 1.25);
+  .form-control-error {
+    background-image: url($form-icon-error);
   }
 }
-// Feedback icon (requires .glyphicon classes)
-.form-control-feedback {
-  position: absolute;
-  top: 0;
-  right: 0;
-  z-index: 2; // Ensure icon is above input groups
-  display: block;
-  width: $input-height-base;
-  height: $input-height-base;
-  line-height: $input-height-base;
-  text-align: center;
-  pointer-events: none;
-}
-.input-lg + .form-control-feedback,
-.input-group-lg + .form-control-feedback,
-.form-group-lg .form-control + .form-control-feedback {
-  width: $input-height-large;
-  height: $input-height-large;
-  line-height: $input-height-large;
-}
-.input-sm + .form-control-feedback,
-.input-group-sm + .form-control-feedback,
-.form-group-sm .form-control + .form-control-feedback {
-  width: $input-height-small;
-  height: $input-height-small;
-  line-height: $input-height-small;
-}
 
-// Feedback states
-.has-success {
-  @include form-control-validation($state-success-text, $state-success-text, $state-success-bg);
-}
-.has-warning {
-  @include form-control-validation($state-warning-text, $state-warning-text, $state-warning-bg);
-}
-.has-error {
-  @include form-control-validation($state-danger-text, $state-danger-text, $state-danger-bg);
-}
 
-// Reposition feedback icon if input has visible label above
-.has-feedback label {
 
-  & ~ .form-control-feedback {
-     top: ($line-height-computed + 5); // Height of the `label` and its margin
-  }
-  &.sr-only ~ .form-control-feedback {
-     top: 0;
-  }
-}
+
+// .form-control-success {
+//   background-image: url("#{$form-icon-success}");
+//   border-color: $brand-success;
+// }
+//
+// .form-control-warning {
+//   background-image: url("#{$form-icon-warning}");
+//   border-color: $brand-warning;
+// }
+//
+// .form-control-error {
+//   background-image: url("#{$form-icon-danger}");
+//   border-color: $brand-danger;
+// }
 
 
-// Help text
+// .has-feedback {
+//   // Enable absolute positioning
+//   position: relative;
 //
-// Apply to any element you wish to create light text for placement immediately
-// below a form control. Use for general help, formatting, or instructional text.
-
-.help-block {
-  display: block; // account for any element using help-block
-  margin-top: 5px;
-  margin-bottom: 10px;
-  color: lighten($text-color, 25%); // lighten the text some for contrast
-}
+//   // Ensure icons don't overlap text
+//   .form-control {
+//     padding-right: ($input-height * 1.25);
+//   }
+// }
+// // Feedback icon
+// .form-control-feedback {
+//   position: absolute;
+//   top: 0;
+//   right: 0;
+//   z-index: 2; // Ensure icon is above input groups
+//   display: block;
+//   width: $input-height;
+//   height: $input-height;
+//   line-height: $input-height;
+//   text-align: center;
+//   pointer-events: none;
+// }
+// .input-lg + .form-control-feedback,
+// .input-group-lg + .form-control-feedback {
+//   width: $input-height-lg;
+//   height: $input-height-lg;
+//   line-height: $input-height-lg;
+// }
+// .input-sm + .form-control-feedback,
+// .input-group-sm + .form-control-feedback {
+//   width: $input-height-sm;
+//   height: $input-height-sm;
+//   line-height: $input-height-sm;
+// }
+//
+// // Form validation states
+// .has-success {
+//   @include form-control-validation($state-success-text, $state-success-text, $state-success-bg);
+// }
+// .has-warning {
+//   @include form-control-validation($state-warning-text, $state-warning-text, $state-warning-bg);
+// }
+// .has-error {
+//   @include form-control-validation($state-danger-text, $state-danger-text, $state-danger-bg);
+// }
+//
+// // Reposition feedback icon if input has visible label above
+// .has-feedback label {
+//
+//   ~ .form-control-feedback {
+//     // TODO: redo this since we nuked the `$line-height-computed`
+//     top: 0; // Height of the `label` and its margin
+//   }
+//
+//   &.sr-only ~ .form-control-feedback {
+//     top: 0;
+//   }
+// }
 
 
 // Inline forms
@@ -463,11 +386,10 @@ input[type="checkbox"] {
 //
 // Heads up! This is mixin-ed into `.navbar-form` in navbars.less.
 
-// [converter] extracted from `.form-inline` for libsass compatibility
-@mixin form-inline {
+.form-inline {
 
   // Kick in the inline
-  @media (min-width: $screen-sm-min) {
+  @include media-breakpoint-up(sm) {
     // Inline-block all the things for "inline"
     .form-group {
       display: inline-block;
@@ -533,79 +455,3 @@ input[type="checkbox"] {
     }
   }
 }
-// [converter] extracted as `@mixin form-inline` for libsass compatibility
-.form-inline {
-  @include form-inline;
-}
-
-
-
-// Horizontal forms
-//
-// Horizontal forms are built on grid classes and allow you to create forms with
-// labels on the left and inputs on the right.
-
-.form-horizontal {
-
-  // Consistent vertical alignment of radios and checkboxes
-  //
-  // Labels also get some reset styles, but that is scoped to a media query below.
-  .radio,
-  .checkbox,
-  .radio-inline,
-  .checkbox-inline {
-    margin-top: 0;
-    margin-bottom: 0;
-    padding-top: ($padding-base-vertical + 1); // Default padding plus a border
-  }
-  // Account for padding we're adding to ensure the alignment and of help text
-  // and other content below items
-  .radio,
-  .checkbox {
-    min-height: ($line-height-computed + ($padding-base-vertical + 1));
-  }
-
-  // Make form groups behave like rows
-  .form-group {
-    @include make-row;
-  }
-
-  // Reset spacing and right align labels, but scope to media queries so that
-  // labels on narrow viewports stack the same as a default form example.
-  @media (min-width: $screen-sm-min) {
-    .control-label {
-      text-align: right;
-      margin-bottom: 0;
-      padding-top: ($padding-base-vertical + 1); // Default padding plus a border
-    }
-  }
-
-  // Validation states
-  //
-  // Reposition the icon because it's now within a grid column and columns have
-  // `position: relative;` on them. Also accounts for the grid gutter padding.
-  .has-feedback .form-control-feedback {
-    right: floor(($grid-gutter-width / 2));
-  }
-
-  // Form group sizes
-  //
-  // Quick utility class for applying `.input-lg` and `.input-sm` styles to the
-  // inputs and labels within a `.form-group`.
-  .form-group-lg {
-    @media (min-width: $screen-sm-min) {
-      .control-label {
-        padding-top: (($padding-large-vertical * $line-height-large) + 1);
-        font-size: $font-size-large;
-      }
-    }
-  }
-  .form-group-sm {
-    @media (min-width: $screen-sm-min) {
-      .control-label {
-        padding-top: ($padding-small-vertical + 1);
-        font-size: $font-size-small;
-      }
-    }
-  }
-}
diff --git a/assets/stylesheets/bootstrap/_glyphicons.scss b/assets/stylesheets/bootstrap/_glyphicons.scss
deleted file mode 100644
index 385340b..0000000
--- a/assets/stylesheets/bootstrap/_glyphicons.scss
+++ /dev/null
@@ -1,307 +0,0 @@
-//
-// Glyphicons for Bootstrap
-//
-// Since icons are fonts, they can be placed anywhere text is placed and are
-// thus automatically sized to match the surrounding child. To use, create an
-// inline element with the appropriate classes, like so:
-//
-// <a href="#"><span class="glyphicon glyphicon-star"></span> Star</a>
-
-@at-root {
-  // Import the fonts
-  @font-face {
-    font-family: 'Glyphicons Halflings';
-    src: url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.eot'), '#{$icon-font-path}#{$icon-font-name}.eot'));
-    src: url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.eot?#iefix'), '#{$icon-font-path}#{$icon-font-name}.eot?#iefix')) format('embedded-opentype'),
-         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.woff2'), '#{$icon-font-path}#{$icon-font-name}.woff2')) format('woff2'),
-         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.woff'), '#{$icon-font-path}#{$icon-font-name}.woff')) format('woff'),
-         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.ttf'), '#{$icon-font-path}#{$icon-font-name}.ttf')) format('truetype'),
-         url(if($bootstrap-sass-asset-helper, twbs-font-path('#{$icon-font-path}#{$icon-font-name}.svg##{$icon-font-svg-id}'), '#{$icon-font-path}#{$icon-font-name}.svg##{$icon-font-svg-id}')) format('svg');
-  }
-}
-
-// Catchall baseclass
-.glyphicon {
-  position: relative;
-  top: 1px;
-  display: inline-block;
-  font-family: 'Glyphicons Halflings';
-  font-style: normal;
-  font-weight: normal;
-  line-height: 1;
-  -webkit-font-smoothing: antialiased;
-  -moz-osx-font-smoothing: grayscale;
-}
-
-// Individual icons
-.glyphicon-asterisk               { &:before { content: "\2a"; } }
-.glyphicon-plus                   { &:before { content: "\2b"; } }
-.glyphicon-euro,
-.glyphicon-eur                    { &:before { content: "\20ac"; } }
-.glyphicon-minus                  { &:before { content: "\2212"; } }
-.glyphicon-cloud                  { &:before { content: "\2601"; } }
-.glyphicon-envelope               { &:before { content: "\2709"; } }
-.glyphicon-pencil                 { &:before { content: "\270f"; } }
-.glyphicon-glass                  { &:before { content: "\e001"; } }
-.glyphicon-music                  { &:before { content: "\e002"; } }
-.glyphicon-search                 { &:before { content: "\e003"; } }
-.glyphicon-heart                  { &:before { content: "\e005"; } }
-.glyphicon-star                   { &:before { content: "\e006"; } }
-.glyphicon-star-empty             { &:before { content: "\e007"; } }
-.glyphicon-user                   { &:before { content: "\e008"; } }
-.glyphicon-film                   { &:before { content: "\e009"; } }
-.glyphicon-th-large               { &:before { content: "\e010"; } }
-.glyphicon-th                     { &:before { content: "\e011"; } }
-.glyphicon-th-list                { &:before { content: "\e012"; } }
-.glyphicon-ok                     { &:before { content: "\e013"; } }
-.glyphicon-remove                 { &:before { content: "\e014"; } }
-.glyphicon-zoom-in                { &:before { content: "\e015"; } }
-.glyphicon-zoom-out               { &:before { content: "\e016"; } }
-.glyphicon-off                    { &:before { content: "\e017"; } }
-.glyphicon-signal                 { &:before { content: "\e018"; } }
-.glyphicon-cog                    { &:before { content: "\e019"; } }
-.glyphicon-trash                  { &:before { content: "\e020"; } }
-.glyphicon-home                   { &:before { content: "\e021"; } }
-.glyphicon-file                   { &:before { content: "\e022"; } }
-.glyphicon-time                   { &:before { content: "\e023"; } }
-.glyphicon-road                   { &:before { content: "\e024"; } }
-.glyphicon-download-alt           { &:before { content: "\e025"; } }
-.glyphicon-download               { &:before { content: "\e026"; } }
-.glyphicon-upload                 { &:before { content: "\e027"; } }
-.glyphicon-inbox                  { &:before { content: "\e028"; } }
-.glyphicon-play-circle            { &:before { content: "\e029"; } }
-.glyphicon-repeat                 { &:before { content: "\e030"; } }
-.glyphicon-refresh                { &:before { content: "\e031"; } }
-.glyphicon-list-alt               { &:before { content: "\e032"; } }
-.glyphicon-lock                   { &:before { content: "\e033"; } }
-.glyphicon-flag                   { &:before { content: "\e034"; } }
-.glyphicon-headphones             { &:before { content: "\e035"; } }
-.glyphicon-volume-off             { &:before { content: "\e036"; } }
-.glyphicon-volume-down            { &:before { content: "\e037"; } }
-.glyphicon-volume-up              { &:before { content: "\e038"; } }
-.glyphicon-qrcode                 { &:before { content: "\e039"; } }
-.glyphicon-barcode                { &:before { content: "\e040"; } }
-.glyphicon-tag                    { &:before { content: "\e041"; } }
-.glyphicon-tags                   { &:before { content: "\e042"; } }
-.glyphicon-book                   { &:before { content: "\e043"; } }
-.glyphicon-bookmark               { &:before { content: "\e044"; } }
-.glyphicon-print                  { &:before { content: "\e045"; } }
-.glyphicon-camera                 { &:before { content: "\e046"; } }
-.glyphicon-font                   { &:before { content: "\e047"; } }
-.glyphicon-bold                   { &:before { content: "\e048"; } }
-.glyphicon-italic                 { &:before { content: "\e049"; } }
-.glyphicon-text-height            { &:before { content: "\e050"; } }
-.glyphicon-text-width             { &:before { content: "\e051"; } }
-.glyphicon-align-left             { &:before { content: "\e052"; } }
-.glyphicon-align-center           { &:before { content: "\e053"; } }
-.glyphicon-align-right            { &:before { content: "\e054"; } }
-.glyphicon-align-justify          { &:before { content: "\e055"; } }
-.glyphicon-list                   { &:before { content: "\e056"; } }
-.glyphicon-indent-left            { &:before { content: "\e057"; } }
-.glyphicon-indent-right           { &:before { content: "\e058"; } }
-.glyphicon-facetime-video         { &:before { content: "\e059"; } }
-.glyphicon-picture                { &:before { content: "\e060"; } }
-.glyphicon-map-marker             { &:before { content: "\e062"; } }
-.glyphicon-adjust                 { &:before { content: "\e063"; } }
-.glyphicon-tint                   { &:before { content: "\e064"; } }
-.glyphicon-edit                   { &:before { content: "\e065"; } }
-.glyphicon-share                  { &:before { content: "\e066"; } }
-.glyphicon-check                  { &:before { content: "\e067"; } }
-.glyphicon-move                   { &:before { content: "\e068"; } }
-.glyphicon-step-backward          { &:before { content: "\e069"; } }
-.glyphicon-fast-backward          { &:before { content: "\e070"; } }
-.glyphicon-backward               { &:before { content: "\e071"; } }
-.glyphicon-play                   { &:before { content: "\e072"; } }
-.glyphicon-pause                  { &:before { content: "\e073"; } }
-.glyphicon-stop                   { &:before { content: "\e074"; } }
-.glyphicon-forward                { &:before { content: "\e075"; } }
-.glyphicon-fast-forward           { &:before { content: "\e076"; } }
-.glyphicon-step-forward           { &:before { content: "\e077"; } }
-.glyphicon-eject                  { &:before { content: "\e078"; } }
-.glyphicon-chevron-left           { &:before { content: "\e079"; } }
-.glyphicon-chevron-right          { &:before { content: "\e080"; } }
-.glyphicon-plus-sign              { &:before { content: "\e081"; } }
-.glyphicon-minus-sign             { &:before { content: "\e082"; } }
-.glyphicon-remove-sign            { &:before { content: "\e083"; } }
-.glyphicon-ok-sign                { &:before { content: "\e084"; } }
-.glyphicon-question-sign          { &:before { content: "\e085"; } }
-.glyphicon-info-sign              { &:before { content: "\e086"; } }
-.glyphicon-screenshot             { &:before { content: "\e087"; } }
-.glyphicon-remove-circle          { &:before { content: "\e088"; } }
-.glyphicon-ok-circle              { &:before { content: "\e089"; } }
-.glyphicon-ban-circle             { &:before { content: "\e090"; } }
-.glyphicon-arrow-left             { &:before { content: "\e091"; } }
-.glyphicon-arrow-right            { &:before { content: "\e092"; } }
-.glyphicon-arrow-up               { &:before { content: "\e093"; } }
-.glyphicon-arrow-down             { &:before { content: "\e094"; } }
-.glyphicon-share-alt              { &:before { content: "\e095"; } }
-.glyphicon-resize-full            { &:before { content: "\e096"; } }
-.glyphicon-resize-small           { &:before { content: "\e097"; } }
-.glyphicon-exclamation-sign       { &:before { content: "\e101"; } }
-.glyphicon-gift                   { &:before { content: "\e102"; } }
-.glyphicon-leaf                   { &:before { content: "\e103"; } }
-.glyphicon-fire                   { &:before { content: "\e104"; } }
-.glyphicon-eye-open               { &:before { content: "\e105"; } }
-.glyphicon-eye-close              { &:before { content: "\e106"; } }
-.glyphicon-warning-sign           { &:before { content: "\e107"; } }
-.glyphicon-plane                  { &:before { content: "\e108"; } }
-.glyphicon-calendar               { &:before { content: "\e109"; } }
-.glyphicon-random                 { &:before { content: "\e110"; } }
-.glyphicon-comment                { &:before { content: "\e111"; } }
-.glyphicon-magnet                 { &:before { content: "\e112"; } }
-.glyphicon-chevron-up             { &:before { content: "\e113"; } }
-.glyphicon-chevron-down           { &:before { content: "\e114"; } }
-.glyphicon-retweet                { &:before { content: "\e115"; } }
-.glyphicon-shopping-cart          { &:before { content: "\e116"; } }
-.glyphicon-folder-close           { &:before { content: "\e117"; } }
-.glyphicon-folder-open            { &:before { content: "\e118"; } }
-.glyphicon-resize-vertical        { &:before { content: "\e119"; } }
-.glyphicon-resize-horizontal      { &:before { content: "\e120"; } }
-.glyphicon-hdd                    { &:before { content: "\e121"; } }
-.glyphicon-bullhorn               { &:before { content: "\e122"; } }
-.glyphicon-bell                   { &:before { content: "\e123"; } }
-.glyphicon-certificate            { &:before { content: "\e124"; } }
-.glyphicon-thumbs-up              { &:before { content: "\e125"; } }
-.glyphicon-thumbs-down            { &:before { content: "\e126"; } }
-.glyphicon-hand-right             { &:before { content: "\e127"; } }
-.glyphicon-hand-left              { &:before { content: "\e128"; } }
-.glyphicon-hand-up                { &:before { content: "\e129"; } }
-.glyphicon-hand-down              { &:before { content: "\e130"; } }
-.glyphicon-circle-arrow-right     { &:before { content: "\e131"; } }
-.glyphicon-circle-arrow-left      { &:before { content: "\e132"; } }
-.glyphicon-circle-arrow-up        { &:before { content: "\e133"; } }
-.glyphicon-circle-arrow-down      { &:before { content: "\e134"; } }
-.glyphicon-globe                  { &:before { content: "\e135"; } }
-.glyphicon-wrench                 { &:before { content: "\e136"; } }
-.glyphicon-tasks                  { &:before { content: "\e137"; } }
-.glyphicon-filter                 { &:before { content: "\e138"; } }
-.glyphicon-briefcase              { &:before { content: "\e139"; } }
-.glyphicon-fullscreen             { &:before { content: "\e140"; } }
-.glyphicon-dashboard              { &:before { content: "\e141"; } }
-.glyphicon-paperclip              { &:before { content: "\e142"; } }
-.glyphicon-heart-empty            { &:before { content: "\e143"; } }
-.glyphicon-link                   { &:before { content: "\e144"; } }
-.glyphicon-phone                  { &:before { content: "\e145"; } }
-.glyphicon-pushpin                { &:before { content: "\e146"; } }
-.glyphicon-usd                    { &:before { content: "\e148"; } }
-.glyphicon-gbp                    { &:before { content: "\e149"; } }
-.glyphicon-sort                   { &:before { content: "\e150"; } }
-.glyphicon-sort-by-alphabet       { &:before { content: "\e151"; } }
-.glyphicon-sort-by-alphabet-alt   { &:before { content: "\e152"; } }
-.glyphicon-sort-by-order          { &:before { content: "\e153"; } }
-.glyphicon-sort-by-order-alt      { &:before { content: "\e154"; } }
-.glyphicon-sort-by-attributes     { &:before { content: "\e155"; } }
-.glyphicon-sort-by-attributes-alt { &:before { content: "\e156"; } }
-.glyphicon-unchecked              { &:before { content: "\e157"; } }
-.glyphicon-expand                 { &:before { content: "\e158"; } }
-.glyphicon-collapse-down          { &:before { content: "\e159"; } }
-.glyphicon-collapse-up            { &:before { content: "\e160"; } }
-.glyphicon-log-in                 { &:before { content: "\e161"; } }
-.glyphicon-flash                  { &:before { content: "\e162"; } }
-.glyphicon-log-out                { &:before { content: "\e163"; } }
-.glyphicon-new-window             { &:before { content: "\e164"; } }
-.glyphicon-record                 { &:before { content: "\e165"; } }
-.glyphicon-save                   { &:before { content: "\e166"; } }
-.glyphicon-open                   { &:before { content: "\e167"; } }
-.glyphicon-saved                  { &:before { content: "\e168"; } }
-.glyphicon-import                 { &:before { content: "\e169"; } }
-.glyphicon-export                 { &:before { content: "\e170"; } }
-.glyphicon-send                   { &:before { content: "\e171"; } }
-.glyphicon-floppy-disk            { &:before { content: "\e172"; } }
-.glyphicon-floppy-saved           { &:before { content: "\e173"; } }
-.glyphicon-floppy-remove          { &:before { content: "\e174"; } }
-.glyphicon-floppy-save            { &:before { content: "\e175"; } }
-.glyphicon-floppy-open            { &:before { content: "\e176"; } }
-.glyphicon-credit-card            { &:before { content: "\e177"; } }
-.glyphicon-transfer               { &:before { content: "\e178"; } }
-.glyphicon-cutlery                { &:before { content: "\e179"; } }
-.glyphicon-header                 { &:before { content: "\e180"; } }
-.glyphicon-compressed             { &:before { content: "\e181"; } }
-.glyphicon-earphone               { &:before { content: "\e182"; } }
-.glyphicon-phone-alt              { &:before { content: "\e183"; } }
-.glyphicon-tower                  { &:before { content: "\e184"; } }
-.glyphicon-stats                  { &:before { content: "\e185"; } }
-.glyphicon-sd-video               { &:before { content: "\e186"; } }
-.glyphicon-hd-video               { &:before { content: "\e187"; } }
-.glyphicon-subtitles              { &:before { content: "\e188"; } }
-.glyphicon-sound-stereo           { &:before { content: "\e189"; } }
-.glyphicon-sound-dolby            { &:before { content: "\e190"; } }
-.glyphicon-sound-5-1              { &:before { content: "\e191"; } }
-.glyphicon-sound-6-1              { &:before { content: "\e192"; } }
-.glyphicon-sound-7-1              { &:before { content: "\e193"; } }
-.glyphicon-copyright-mark         { &:before { content: "\e194"; } }
-.glyphicon-registration-mark      { &:before { content: "\e195"; } }
-.glyphicon-cloud-download         { &:before { content: "\e197"; } }
-.glyphicon-cloud-upload           { &:before { content: "\e198"; } }
-.glyphicon-tree-conifer           { &:before { content: "\e199"; } }
-.glyphicon-tree-deciduous         { &:before { content: "\e200"; } }
-.glyphicon-cd                     { &:before { content: "\e201"; } }
-.glyphicon-save-file              { &:before { content: "\e202"; } }
-.glyphicon-open-file              { &:before { content: "\e203"; } }
-.glyphicon-level-up               { &:before { content: "\e204"; } }
-.glyphicon-copy                   { &:before { content: "\e205"; } }
-.glyphicon-paste                  { &:before { content: "\e206"; } }
-// The following 2 Glyphicons are omitted for the time being because
-// they currently use Unicode codepoints that are outside the
-// Basic Multilingual Plane (BMP). Older buggy versions of WebKit can't handle
-// non-BMP codepoints in CSS string escapes, and thus can't display these two icons.
-// Notably, the bug affects some older versions of the Android Browser.
-// More info: https://github.com/twbs/bootstrap/issues/10106
-// .glyphicon-door                   { &:before { content: "\1f6aa"; } }
-// .glyphicon-key                    { &:before { content: "\1f511"; } }
-.glyphicon-alert                  { &:before { content: "\e209"; } }
-.glyphicon-equalizer              { &:before { content: "\e210"; } }
-.glyphicon-king                   { &:before { content: "\e211"; } }
-.glyphicon-queen                  { &:before { content: "\e212"; } }
-.glyphicon-pawn                   { &:before { content: "\e213"; } }
-.glyphicon-bishop                 { &:before { content: "\e214"; } }
-.glyphicon-knight                 { &:before { content: "\e215"; } }
-.glyphicon-baby-formula           { &:before { content: "\e216"; } }
-.glyphicon-tent                   { &:before { content: "\26fa"; } }
-.glyphicon-blackboard             { &:before { content: "\e218"; } }
-.glyphicon-bed                    { &:before { content: "\e219"; } }
-.glyphicon-apple                  { &:before { content: "\f8ff"; } }
-.glyphicon-erase                  { &:before { content: "\e221"; } }
-.glyphicon-hourglass              { &:before { content: "\231b"; } }
-.glyphicon-lamp                   { &:before { content: "\e223"; } }
-.glyphicon-duplicate              { &:before { content: "\e224"; } }
-.glyphicon-piggy-bank             { &:before { content: "\e225"; } }
-.glyphicon-scissors               { &:before { content: "\e226"; } }
-.glyphicon-bitcoin                { &:before { content: "\e227"; } }
-.glyphicon-btc                    { &:before { content: "\e227"; } }
-.glyphicon-xbt                    { &:before { content: "\e227"; } }
-.glyphicon-yen                    { &:before { content: "\00a5"; } }
-.glyphicon-jpy                    { &:before { content: "\00a5"; } }
-.glyphicon-ruble                  { &:before { content: "\20bd"; } }
-.glyphicon-rub                    { &:before { content: "\20bd"; } }
-.glyphicon-scale                  { &:before { content: "\e230"; } }
-.glyphicon-ice-lolly              { &:before { content: "\e231"; } }
-.glyphicon-ice-lolly-tasted       { &:before { content: "\e232"; } }
-.glyphicon-education              { &:before { content: "\e233"; } }
-.glyphicon-option-horizontal      { &:before { content: "\e234"; } }
-.glyphicon-option-vertical        { &:before { content: "\e235"; } }
-.glyphicon-menu-hamburger         { &:before { content: "\e236"; } }
-.glyphicon-modal-window           { &:before { content: "\e237"; } }
-.glyphicon-oil                    { &:before { content: "\e238"; } }
-.glyphicon-grain                  { &:before { content: "\e239"; } }
-.glyphicon-sunglasses             { &:before { content: "\e240"; } }
-.glyphicon-text-size              { &:before { content: "\e241"; } }
-.glyphicon-text-color             { &:before { content: "\e242"; } }
-.glyphicon-text-background        { &:before { content: "\e243"; } }
-.glyphicon-object-align-top       { &:before { content: "\e244"; } }
-.glyphicon-object-align-bottom    { &:before { content: "\e245"; } }
-.glyphicon-object-align-horizontal{ &:before { content: "\e246"; } }
-.glyphicon-object-align-left      { &:before { content: "\e247"; } }
-.glyphicon-object-align-vertical  { &:before { content: "\e248"; } }
-.glyphicon-object-align-right     { &:before { content: "\e249"; } }
-.glyphicon-triangle-right         { &:before { content: "\e250"; } }
-.glyphicon-triangle-left          { &:before { content: "\e251"; } }
-.glyphicon-triangle-bottom        { &:before { content: "\e252"; } }
-.glyphicon-triangle-top           { &:before { content: "\e253"; } }
-.glyphicon-console                { &:before { content: "\e254"; } }
-.glyphicon-superscript            { &:before { content: "\e255"; } }
-.glyphicon-subscript              { &:before { content: "\e256"; } }
-.glyphicon-menu-left              { &:before { content: "\e257"; } }
-.glyphicon-menu-right             { &:before { content: "\e258"; } }
-.glyphicon-menu-down              { &:before { content: "\e259"; } }
-.glyphicon-menu-up                { &:before { content: "\e260"; } }
diff --git a/assets/stylesheets/bootstrap/_grid.scss b/assets/stylesheets/bootstrap/_grid.scss
index b15ca27..b71d5b0 100644
--- a/assets/stylesheets/bootstrap/_grid.scss
+++ b/assets/stylesheets/bootstrap/_grid.scss
@@ -1,23 +1,15 @@
-//
-// Grid system
-// --------------------------------------------------
-
-
 // Container widths
 //
 // Set the container width, and override it for fixed navbars in media queries.
 
 .container {
-  @include container-fixed;
+  @include make-container();
 
-  @media (min-width: $screen-sm-min) {
-    width: $container-sm;
-  }
-  @media (min-width: $screen-md-min) {
-    width: $container-md;
-  }
-  @media (min-width: $screen-lg-min) {
-    width: $container-lg;
+  // For each breakpoint, define the maximum width of the container in a media query
+  @each $breakpoint, $container-max-width in $container-max-widths {
+    @include media-breakpoint-up($breakpoint) {
+      max-width: $container-max-width;
+    }
   }
 }
 
@@ -28,7 +20,7 @@
 // width for fluid, full width layouts.
 
 .container-fluid {
-  @include container-fixed;
+  @include make-container();
 }
 
 
@@ -37,7 +29,7 @@
 // Rows contain and clear the floats of your columns.
 
 .row {
-  @include make-row;
+  @include make-row();
 }
 
 
@@ -45,40 +37,89 @@
 //
 // Common styles for small and large grid columns
 
-@include make-grid-columns;
+@include make-grid-columns();
 
 
-// Extra small grid
+// Flex variation
 //
-// Columns, offsets, pushes, and pulls for extra small devices like
-// smartphones.
+// Custom styles for additional flex alignment options.
 
-@include make-grid(xs);
+@if $enable-flex {
 
+  // Flex column reordering
 
-// Small grid
-//
-// Columns, offsets, pushes, and pulls for the small device range, from phones
-// to tablets.
+  .col-xs-first { order: -1; }
+  .col-xs-last { order: 1; }
 
-@media (min-width: $screen-sm-min) {
-  @include make-grid(sm);
-}
+  @include media-breakpoint-up(sm) {
+    .col-sm-first { order: -1; }
+    .col-sm-last { order: 1; }
+  }
+  @include media-breakpoint-up(md) {
+    .col-md-first { order: -1; }
+    .col-md-last { order: 1; }
+  }
+  @include media-breakpoint-up(lg) {
+    .col-lg-first { order: -1; }
+    .col-lg-last { order: 1; }
+  }
+  @include media-breakpoint-up(xl) {
+    .col-xl-first { order: -1; }
+    .col-xl-last { order: 1; }
+  }
 
+  // Alignment for every column in row
 
-// Medium grid
-//
-// Columns, offsets, pushes, and pulls for the desktop device range.
+  .row-xs-top    { align-items: flex-start; }
+  .row-xs-center { align-items: center; }
+  .row-xs-bottom { align-items: flex-end; }
 
-@media (min-width: $screen-md-min) {
-  @include make-grid(md);
-}
+  @include media-breakpoint-up(sm) {
+    .row-sm-top    { align-items: flex-start; }
+    .row-sm-center { align-items: center; }
+    .row-sm-bottom { align-items: flex-end; }
+  }
+  @include media-breakpoint-up(md) {
+    .row-md-top    { align-items: flex-start; }
+    .row-md-center { align-items: center; }
+    .row-md-bottom { align-items: flex-end; }
+  }
+  @include media-breakpoint-up(lg) {
+    .row-lg-top    { align-items: flex-start; }
+    .row-lg-center { align-items: center; }
+    .row-lg-bottom { align-items: flex-end; }
+  }
+  @include media-breakpoint-up(xl) {
+    .row-xl-top    { align-items: flex-start; }
+    .row-xl-center { align-items: center; }
+    .row-xl-bottom { align-items: flex-end; }
+  }
 
+  // Alignment per column
 
-// Large grid
-//
-// Columns, offsets, pushes, and pulls for the large desktop device range.
+  .col-xs-top    { align-self: flex-start; }
+  .col-xs-center { align-self: center; }
+  .col-xs-bottom { align-self: flex-end; }
+
+  @include media-breakpoint-up(sm) {
+    .col-sm-top    { align-self: flex-start; }
+    .col-sm-center { align-self: center; }
+    .col-sm-bottom { align-self: flex-end; }
+  }
+  @include media-breakpoint-up(md) {
+    .col-md-top    { align-self: flex-start; }
+    .col-md-center { align-self: center; }
+    .col-md-bottom { align-self: flex-end; }
+  }
+  @include media-breakpoint-up(lg) {
+    .col-lg-top    { align-self: flex-start; }
+    .col-lg-center { align-self: center; }
+    .col-lg-bottom { align-self: flex-end; }
+  }
+  @include media-breakpoint-up(xl) {
+    .col-xl-top    { align-self: flex-start; }
+    .col-xl-center { align-self: center; }
+    .col-xl-bottom { align-self: flex-end; }
+  }
 
-@media (min-width: $screen-lg-min) {
-  @include make-grid(lg);
 }
diff --git a/assets/stylesheets/bootstrap/_images.scss b/assets/stylesheets/bootstrap/_images.scss
new file mode 100644
index 0000000..dbdd858
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_images.scss
@@ -0,0 +1,28 @@
+// Responsive images (ensure images don't scale beyond their parents)
+.img-responsive {
+  @include img-responsive();
+}
+
+// Rounded corners
+.img-rounded {
+  @include border-radius($border-radius-lg);
+}
+
+// Image thumbnails
+.img-thumbnail {
+  padding: $thumbnail-padding;
+  line-height: $line-height;
+  background-color: $thumbnail-bg;
+  border: 1px solid $thumbnail-border;
+  border-radius: $thumbnail-border-radius;
+  transition: all .2s ease-in-out;
+  @include box-shadow(0 1px 2px rgba(0,0,0,.075));
+
+  // Keep them at most 100% wide
+  @include img-responsive(inline-block);
+}
+
+// Perfect circle
+.img-circle {
+  border-radius: 50%;
+}
diff --git a/assets/stylesheets/bootstrap/_input-groups.scss b/assets/stylesheets/bootstrap/_input-group.scss
index 12f0c42..df8aa10 100644
--- a/assets/stylesheets/bootstrap/_input-groups.scss
+++ b/assets/stylesheets/bootstrap/_input-group.scss
@@ -1,19 +1,17 @@
 //
-// Input groups
-// --------------------------------------------------
-
 // Base styles
-// -------------------------
+//
+
 .input-group {
-  position: relative; // For dropdowns
-  display: table;
-  border-collapse: separate; // prevent input groups from inheriting border styles from table cells when placed within a table
-
-  // Undo padding and float of grid classes
-  &[class*="col-"] {
-    float: none;
-    padding-left: 0;
-    padding-right: 0;
+  position: relative;
+
+  @if $enable-flex {
+    display: flex;
+  } @else {
+    display: table;
+    // Prevent input groups from inheriting border styles from table cells when
+    // placed within a table.
+    border-collapse: separate;
   }
 
   .form-control {
@@ -21,17 +19,45 @@
     // proper border colors.
     position: relative;
     z-index: 2;
+    @if $enable-flex {
+      flex: 1;
+    } @else {
+      // IE9 fubars the placeholder attribute in text inputs and the arrows on
+      // select elements in input groups. To fix it, we float the input. Details:
+      // https://github.com/twbs/bootstrap/issues/11561#issuecomment-28936855
+      float: left;
+      width: 100%;
+    }
+    margin-bottom: 0;
+  }
+}
+
+.input-group-addon,
+.input-group-btn,
+.input-group .form-control {
+  @if $enable-flex {
+    // do nothing
+  } @else {
+    display: table-cell;
+  }
 
-    // IE9 fubars the placeholder attribute in text inputs and the arrows on
-    // select elements in input groups. To fix it, we float the input. Details:
-    // https://github.com/twbs/bootstrap/issues/11561#issuecomment-28936855
-    float: left;
+  &:not(:first-child):not(:last-child) {
+    @include border-radius(0);
+  }
+}
 
-    width: 100%;
-    margin-bottom: 0;
+.input-group-addon,
+.input-group-btn {
+  @if $enable-flex {
+    // do nothing
+  } @else {
+    width: 1%;
   }
+  white-space: nowrap;
+  vertical-align: middle; // Match the inputs
 }
 
+
 // Sizing options
 //
 // Remix the default form control sizing classes into new ones for easier
@@ -40,38 +66,21 @@
 .input-group-lg > .form-control,
 .input-group-lg > .input-group-addon,
 .input-group-lg > .input-group-btn > .btn {
-  @extend .input-lg;
+  @extend .form-control-lg;
 }
 .input-group-sm > .form-control,
 .input-group-sm > .input-group-addon,
 .input-group-sm > .input-group-btn > .btn {
-  @extend .input-sm;
+  @extend .form-control-sm;
 }
 
 
-// Display as table-cell
-// -------------------------
-.input-group-addon,
-.input-group-btn,
-.input-group .form-control {
-  display: table-cell;
-
-  &:not(:first-child):not(:last-child) {
-    border-radius: 0;
-  }
-}
-// Addon and addon wrapper for buttons
-.input-group-addon,
-.input-group-btn {
-  width: 1%;
-  white-space: nowrap;
-  vertical-align: middle; // Match the inputs
-}
-
+//
 // Text input groups
-// -------------------------
+//
+
 .input-group-addon {
-  padding: $padding-base-vertical $padding-base-horizontal;
+  padding: $input-padding-y $input-padding-x;
   font-size: $font-size-base;
   font-weight: normal;
   line-height: 1;
@@ -79,18 +88,18 @@
   text-align: center;
   background-color: $input-group-addon-bg;
   border: 1px solid $input-group-addon-border-color;
-  border-radius: $border-radius-base;
+  @include border-radius($border-radius);
 
   // Sizing
-  &.input-sm {
-    padding: $padding-small-vertical $padding-small-horizontal;
-    font-size: $font-size-small;
-    border-radius: $border-radius-small;
+  &.form-control-sm {
+    padding: $input-padding-y-sm $input-padding-x-sm;
+    font-size: $font-size-sm;
+    @include border-radius($border-radius-sm);
   }
-  &.input-lg {
-    padding: $padding-large-vertical $padding-large-horizontal;
-    font-size: $font-size-large;
-    border-radius: $border-radius-large;
+  &.form-control-lg {
+    padding: $input-padding-x-lg $input-padding-x-lg;
+    font-size: $font-size-lg;
+    @include border-radius($border-radius-lg);
   }
 
   // Nuke default margins from checkboxes and radios to vertically center within.
@@ -100,7 +109,11 @@
   }
 }
 
+
+//
 // Reset rounded corners
+//
+
 .input-group .form-control:first-child,
 .input-group-addon:first-child,
 .input-group-btn:first-child > .btn,
@@ -126,8 +139,11 @@
   border-left: 0;
 }
 
+
+//
 // Button input groups
-// -------------------------
+//
+
 .input-group-btn {
   position: relative;
   // Jankily prevent input button groups from wrapping with `white-space` and
@@ -143,9 +159,7 @@
       margin-left: -1px;
     }
     // Bring the "active" button to the front
-    &:hover,
-    &:focus,
-    &:active {
+    @include hover-focus-active {
       z-index: 2;
     }
   }
diff --git a/assets/stylesheets/bootstrap/_jumbotron.scss b/assets/stylesheets/bootstrap/_jumbotron.scss
index 439d23d..97806af 100644
--- a/assets/stylesheets/bootstrap/_jumbotron.scss
+++ b/assets/stylesheets/bootstrap/_jumbotron.scss
@@ -1,52 +1,22 @@
-//
-// Jumbotron
-// --------------------------------------------------
-
-
 .jumbotron {
-  padding-top:    $jumbotron-padding;
-  padding-bottom: $jumbotron-padding;
+  padding: $jumbotron-padding ($jumbotron-padding / 2);
   margin-bottom: $jumbotron-padding;
-  color: $jumbotron-color;
   background-color: $jumbotron-bg;
+  @include border-radius($border-radius-lg);
+}
 
-  h1,
-  .h1 {
-    color: $jumbotron-heading-color;
-  }
-
-  p {
-    margin-bottom: ($jumbotron-padding / 2);
-    font-size: $jumbotron-font-size;
-    font-weight: 200;
-  }
-
-  > hr {
-    border-top-color: darken($jumbotron-bg, 10%);
-  }
-
-  .container &,
-  .container-fluid & {
-    border-radius: $border-radius-large; // Only round corners at higher resolutions if contained in a container
-  }
+.jumbotron-hr {
+  border-top-color: darken($jumbotron-bg, 10%);
+}
 
-  .container {
-    max-width: 100%;
+@include media-breakpoint-up(sm) {
+  .jumbotron {
+    padding: ($jumbotron-padding * 2) $jumbotron-padding;
   }
+}
 
-  @media screen and (min-width: $screen-sm-min) {
-    padding-top:    ($jumbotron-padding * 1.6);
-    padding-bottom: ($jumbotron-padding * 1.6);
-
-    .container &,
-    .container-fluid & {
-      padding-left:  ($jumbotron-padding * 2);
-      padding-right: ($jumbotron-padding * 2);
-    }
-
-    h1,
-    .h1 {
-      font-size: $jumbotron-heading-font-size;
-    }
-  }
+.jumbotron-fluid {
+  padding-right: 0;
+  padding-left: 0;
+  @include border-radius(0);
 }
diff --git a/assets/stylesheets/bootstrap/_labels.scss b/assets/stylesheets/bootstrap/_labels.scss
index 42ed6ea..599f335 100644
--- a/assets/stylesheets/bootstrap/_labels.scss
+++ b/assets/stylesheets/bootstrap/_labels.scss
@@ -1,10 +1,11 @@
+// Base class
 //
-// Labels
-// --------------------------------------------------
+// Requires one of the contextual, color modifier classes for `color` and
+// `background-color`.
 
 .label {
-  display: inline;
-  padding: .2em .6em .3em;
+  display: inline-block;
+  padding: .25em .4em;
   font-size: 75%;
   font-weight: bold;
   line-height: 1;
@@ -12,11 +13,9 @@
   text-align: center;
   white-space: nowrap;
   vertical-align: baseline;
-  border-radius: .25em;
+  @include border-radius();
 
-  // [converter] extracted a& to a.label
-
-  // Empty labels collapse automatically (not available in IE8)
+  // Empty labels collapse automatically
   &:empty {
     display: none;
   }
@@ -30,16 +29,27 @@
 
 // Add hover effects, but only for links
 a.label {
-  &:hover,
-  &:focus {
+  @include hover-focus {
     color: $label-link-hover-color;
     text-decoration: none;
     cursor: pointer;
   }
 }
 
+// Pill labels
+//
+// Make them extra rounded with a modifier to replace v3's badges.
+
+.label-pill {
+  padding-left: .6em;
+  padding-right: .6em;
+  border-radius: 1rem;
+}
+
+
 // Colors
-// Contextual variations (linked labels get darker on :hover)
+//
+// Contextual variations (linked labels get darker on :hover).
 
 .label-default {
   @include label-variant($label-default-bg);
diff --git a/assets/stylesheets/bootstrap/_list-group.scss b/assets/stylesheets/bootstrap/_list-group.scss
index 7cb83aa..d909022 100644
--- a/assets/stylesheets/bootstrap/_list-group.scss
+++ b/assets/stylesheets/bootstrap/_list-group.scss
@@ -1,16 +1,11 @@
-//
-// List groups
-// --------------------------------------------------
-
-
 // Base class
 //
 // Easily usable on <ul>, <ol>, or <div>.
 
 .list-group {
   // No need to set list-style: none; since .list-group-item is block level
-  margin-bottom: 20px;
   padding-left: 0; // reset padding because ul and ol
+  margin-bottom: 0;
 }
 
 
@@ -21,11 +16,11 @@
 .list-group-item {
   position: relative;
   display: block;
-  padding: 10px 15px;
+  padding: .75rem 1.25rem;
   // Place the border on the list items and negative margin up for better styling
-  margin-bottom: -1px;
+  margin-bottom: -.0625rem;
   background-color: $list-group-bg;
-  border: 1px solid $list-group-border;
+  border: .0625rem solid $list-group-border;
 
   // Round the first and last items
   &:first-child {
@@ -37,14 +32,23 @@
   }
 }
 
+.list-group-flush {
+  .list-group-item {
+    border-width: .0625rem 0;
+    border-radius: 0;
+  }
+}
+
 
 // Interactive list items
 //
-// Use anchor or button elements instead of `li`s or `div`s to create interactive items.
-// Includes an extra `.active` modifier class for showing selected items.
+// Use anchor or button elements instead of `li`s or `div`s to create interactive
+// list items. Includes an extra `.active` modifier class for selected items.
 
 a.list-group-item,
 button.list-group-item {
+  width: 100%;
+  text-align: inherit;
   color: $list-group-link-color;
 
   .list-group-item-heading {
@@ -52,54 +56,48 @@ button.list-group-item {
   }
 
   // Hover state
-  &:hover,
-  &:focus {
-    text-decoration: none;
+  @include hover-focus {
     color: $list-group-link-hover-color;
+    text-decoration: none;
     background-color: $list-group-hover-bg;
   }
 }
 
-button.list-group-item {
-  width: 100%;
-  text-align: left;
-}
-
 .list-group-item {
   // Disabled state
-  &.disabled,
-  &.disabled:hover,
-  &.disabled:focus {
-    background-color: $list-group-disabled-bg;
-    color: $list-group-disabled-color;
-    cursor: $cursor-disabled;
-
-    // Force color to inherit for custom content
-    .list-group-item-heading {
-      color: inherit;
-    }
-    .list-group-item-text {
-      color: $list-group-disabled-text-color;
+  &.disabled {
+    @include plain-hover-focus {
+      color: $list-group-disabled-color;
+      cursor: $cursor-disabled;
+      background-color: $list-group-disabled-bg;
+
+      // Force color to inherit for custom content
+      .list-group-item-heading {
+        color: inherit;
+      }
+      .list-group-item-text {
+        color: $list-group-disabled-text-color;
+      }
     }
   }
 
   // Active class on item itself, not parent
-  &.active,
-  &.active:hover,
-  &.active:focus {
-    z-index: 2; // Place active items above their siblings for proper border styling
-    color: $list-group-active-color;
-    background-color: $list-group-active-bg;
-    border-color: $list-group-active-border;
-
-    // Force color to inherit for custom content
-    .list-group-item-heading,
-    .list-group-item-heading > small,
-    .list-group-item-heading > .small {
-      color: inherit;
-    }
-    .list-group-item-text {
-      color: $list-group-active-text-color;
+  &.active {
+    @include plain-hover-focus {
+      z-index: 2; // Place active items above their siblings for proper border styling
+      color: $list-group-active-color;
+      background-color: $list-group-active-bg;
+      border-color: $list-group-active-border;
+
+      // Force color to inherit for custom content
+      .list-group-item-heading,
+      .list-group-item-heading > small,
+      .list-group-item-heading > .small {
+        color: inherit;
+      }
+      .list-group-item-text {
+        color: $list-group-active-text-color;
+      }
     }
   }
 }
diff --git a/assets/stylesheets/bootstrap/_media.scss b/assets/stylesheets/bootstrap/_media.scss
index 8c835e8..c92e2b1 100644
--- a/assets/stylesheets/bootstrap/_media.scss
+++ b/assets/stylesheets/bootstrap/_media.scss
@@ -1,21 +1,45 @@
-.media {
-  // Proper spacing between instances of .media
-  margin-top: 15px;
+@if $enable-flex {
+  .media {
+    display: flex;
+    margin-bottom: $spacer;
+  }
+  .media-body {
+    flex: 1;
+  }
+} @else {
+  .media {
+    margin-top: 15px;
 
-  &:first-child {
-    margin-top: 0;
+    &:first-child {
+      margin-top: 0;
+    }
+  }
+  .media,
+  .media-body {
+    overflow: hidden;
+    zoom: 1;
+  }
+  .media-body {
+    width: 10000px;
+  }
+  .media-left,
+  .media-right,
+  .media-body {
+    display: table-cell;
+    vertical-align: top;
+  }
+  .media-middle {
+    vertical-align: middle;
+  }
+  .media-bottom {
+    vertical-align: bottom;
   }
 }
 
-.media,
-.media-body {
-  zoom: 1;
-  overflow: hidden;
-}
 
-.media-body {
-  width: 10000px;
-}
+//
+// Images/elements as the media anchor
+//
 
 .media-object {
   display: block;
@@ -26,40 +50,34 @@
   }
 }
 
-.media-right,
-.media > .pull-right {
+
+//
+// Alignment
+//
+
+.media-right {
   padding-left: 10px;
 }
 
-.media-left,
-.media > .pull-left {
+.media-left {
   padding-right: 10px;
 }
 
-.media-left,
-.media-right,
-.media-body {
-  display: table-cell;
-  vertical-align: top;
-}
-
-.media-middle {
-  vertical-align: middle;
-}
 
-.media-bottom {
-  vertical-align: bottom;
-}
+//
+// Headings
+//
 
-// Reset margins on headings for tighter default spacing
 .media-heading {
   margin-top: 0;
   margin-bottom: 5px;
 }
 
+
+//
 // Media list variation
 //
-// Undo default ul/ol styles
+
 .media-list {
   padding-left: 0;
   list-style: none;
diff --git a/assets/stylesheets/bootstrap/_mixins.scss b/assets/stylesheets/bootstrap/_mixins.scss
index 78cd5aa..35f46fe 100644
--- a/assets/stylesheets/bootstrap/_mixins.scss
+++ b/assets/stylesheets/bootstrap/_mixins.scss
@@ -1,40 +1,60 @@
-// Mixins
-// --------------------------------------------------
+// Toggles
+//
+// Used in conjunction with global variables to enable certain theme features.
+
+@mixin border-radius($radius: $border-radius) {
+  @if $enable-rounded {
+    border-radius: $radius;
+  }
+}
+
+@mixin box-shadow($shadow...) {
+  @if $enable-shadows {
+    box-shadow: $shadow;
+  }
+}
+
+@mixin transition($transition...) {
+  @if $enable-transitions {
+    transition: $transition;
+  }
+}
 
 // Utilities
+@import "mixins/breakpoints";
 @import "mixins/hide-text";
-@import "mixins/opacity";
+@import "mixins/hover";
 @import "mixins/image";
-@import "mixins/labels";
+@import "mixins/label";
 @import "mixins/reset-filter";
 @import "mixins/resize";
 @import "mixins/responsive-visibility";
+@import "mixins/screen-reader";
 @import "mixins/size";
 @import "mixins/tab-focus";
 @import "mixins/reset-text";
 @import "mixins/text-emphasis";
-@import "mixins/text-overflow";
-@import "mixins/vendor-prefixes";
+@import "mixins/text-truncate";
 
-// Components
-@import "mixins/alerts";
+// // Components
+@import "mixins/alert";
 @import "mixins/buttons";
-@import "mixins/panels";
 @import "mixins/pagination";
 @import "mixins/list-group";
 @import "mixins/nav-divider";
 @import "mixins/forms";
-@import "mixins/progress-bar";
+@import "mixins/progress";
 @import "mixins/table-row";
 
-// Skins
+// // Skins
 @import "mixins/background-variant";
 @import "mixins/border-radius";
 @import "mixins/gradients";
 
-// Layout
+// // Layout
 @import "mixins/clearfix";
 @import "mixins/center-block";
-@import "mixins/nav-vertical-align";
+// @import "mixins/navbar-align";
 @import "mixins/grid-framework";
 @import "mixins/grid";
+@import "mixins/pulls";
diff --git a/assets/stylesheets/bootstrap/_modals.scss b/assets/stylesheets/bootstrap/_modal.scss
index 837558e..f034c77 100644
--- a/assets/stylesheets/bootstrap/_modals.scss
+++ b/assets/stylesheets/bootstrap/_modal.scss
@@ -1,12 +1,9 @@
-//
-// Modals
-// --------------------------------------------------
-
 // .modal-open      - body class for killing the scroll
 // .modal           - container to scroll within
 // .modal-dialog    - positioning shell for the actual modal
 // .modal-content   - actual modal w/ bg and corners and shit
 
+
 // Kill the scroll on the body
 .modal-open {
   overflow: hidden;
@@ -14,26 +11,25 @@
 
 // Container that the modal scrolls within
 .modal {
-  display: none;
-  overflow: hidden;
   position: fixed;
   top: 0;
   right: 0;
   bottom: 0;
   left: 0;
   z-index: $zindex-modal;
-  -webkit-overflow-scrolling: touch;
-
+  display: none;
+  overflow: hidden;
   // Prevent Chrome on Windows from adding a focus outline. For details, see
   // https://github.com/twbs/bootstrap/pull/10951.
   outline: 0;
+  -webkit-overflow-scrolling: touch;
 
   // When fading in the modal, animate it to slide down
   &.fade .modal-dialog {
-    @include translate(0, -25%);
-    @include transition-transform(0.3s ease-out);
+    transform: translate(0, -25%);
+    transition: transform .3s ease-out;
   }
-  &.in .modal-dialog { @include translate(0, 0) }
+  &.in .modal-dialog { transform: translate(0, 0); }
 }
 .modal-open .modal {
   overflow-x: hidden;
@@ -51,11 +47,10 @@
 .modal-content {
   position: relative;
   background-color: $modal-content-bg;
-  border: 1px solid $modal-content-fallback-border-color; //old browsers fallback (ie8 etc)
+  background-clip: padding-box;
   border: 1px solid $modal-content-border-color;
-  border-radius: $border-radius-large;
+  border-radius: $border-radius-lg;
   @include box-shadow(0 3px 9px rgba(0,0,0,.5));
-  background-clip: padding-box;
   // Remove focus outline from opened modal
   outline: 0;
 }
@@ -67,11 +62,12 @@
   right: 0;
   bottom: 0;
   left: 0;
-  z-index: $zindex-modal-background;
+  z-index: $zindex-modal-bg;
   background-color: $modal-backdrop-bg;
+
   // Fade for backdrop
-  &.fade { @include opacity(0); }
-  &.in { @include opacity($modal-backdrop-opacity); }
+  &.fade { opacity: 0; }
+  &.in { opacity: $modal-backdrop-opacity; }
 }
 
 // Modal header
@@ -79,7 +75,7 @@
 .modal-header {
   padding: $modal-title-padding;
   border-bottom: 1px solid $modal-header-border-color;
-  min-height: ($modal-title-padding + $modal-title-line-height);
+  @include clearfix;
 }
 // Close icon
 .modal-header .close {
@@ -104,12 +100,12 @@
   padding: $modal-inner-padding;
   text-align: right; // right align buttons
   border-top: 1px solid $modal-footer-border-color;
-  @include clearfix; // clear it in case folks use .pull-* classes on buttons
+  @include clearfix(); // clear it in case folks use .pull-* classes on buttons
 
   // Properly space out buttons
   .btn + .btn {
-    margin-left: 5px;
     margin-bottom: 0; // account for input[type="submit"] which gets the bottom margin like all other inputs
+    margin-left: 5px;
   }
   // but override that for button groups
   .btn-group .btn + .btn {
@@ -131,7 +127,7 @@
 }
 
 // Scale up the modal
-@media (min-width: $screen-sm-min) {
+@include media-breakpoint-up(sm) {
   // Automatically set modal's width for larger viewports
   .modal-dialog {
     width: $modal-md;
@@ -145,6 +141,6 @@
   .modal-sm { width: $modal-sm; }
 }
 
-@media (min-width: $screen-md-min) {
+@include media-breakpoint-up(md) {
   .modal-lg { width: $modal-lg; }
 }
diff --git a/assets/stylesheets/bootstrap/_nav.scss b/assets/stylesheets/bootstrap/_nav.scss
new file mode 100644
index 0000000..551f3c9
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_nav.scss
@@ -0,0 +1,155 @@
+// Base class
+//
+// Kickstart any navigation component with a set of style resets. Works with
+// `<nav>`s or `<ul>`s.
+
+.nav {
+  padding-left: 0;
+  margin-bottom: 0;
+  list-style: none;
+}
+
+.nav-link {
+  display: inline-block;
+
+  @include hover-focus {
+    text-decoration: none;
+  }
+
+  // Disabled state lightens text and removes hover/tab effects
+  &.disabled {
+    color: $nav-disabled-link-color;
+
+    @include plain-hover-focus {
+      color: $nav-disabled-link-hover-color;
+      cursor: $cursor-disabled;
+      background-color: transparent;
+    }
+  }
+}
+
+
+// Nav inline
+
+.nav-inline {
+  .nav-link + .nav-link {
+    margin-left: 1rem;
+  }
+}
+
+
+//
+// Tabs
+//
+
+.nav-tabs {
+  border-bottom: 1px solid $nav-tabs-border-color;
+  @include clearfix();
+
+  .nav-item {
+    float: left;
+    // Make the list-items overlay the bottom border
+    margin-bottom: -1px;
+
+    + .nav-item {
+      margin-left: .2rem;
+    }
+  }
+
+  .nav-link {
+    display: block;
+    padding: $nav-link-padding;
+    border: 1px solid transparent;
+    @include border-radius($border-radius $border-radius 0 0);
+
+    @include hover-focus {
+      border-color: $nav-tabs-link-hover-border-color $nav-tabs-link-hover-border-color $nav-tabs-border-color;
+    }
+
+    &.disabled {
+      @include plain-hover-focus {
+        color: $nav-disabled-link-color;
+        background-color: transparent;
+        border-color: transparent;
+      }
+    }
+  }
+
+  .nav-link.active,
+  .nav-item.open .nav-link {
+    @include plain-hover-focus {
+      color: $nav-tabs-active-link-hover-color;
+      background-color: $nav-tabs-active-link-hover-bg;
+      border-color: $nav-tabs-active-link-hover-border-color $nav-tabs-active-link-hover-border-color transparent;
+    }
+  }
+}
+
+
+//
+// Pills
+//
+
+.nav-pills {
+  .nav-item {
+    float: left;
+
+    + .nav-item {
+      margin-left: .2rem;
+    }
+  }
+
+  .nav-link {
+    display: block;
+    padding: $nav-link-padding;
+    @include border-radius($nav-pills-border-radius);
+  }
+
+  .nav-link.active,
+  .nav-item.open .nav-link {
+    @include plain-hover-focus {
+      color: $component-active-color;
+      cursor: default;
+      background-color: $component-active-bg;
+    }
+  }
+}
+
+.nav-stacked {
+  .nav-item {
+    display: block;
+    float: none;
+
+    + .nav-item {
+      margin-top: .2rem;
+      margin-left: 0;
+    }
+  }
+}
+
+
+//
+// Tabbable tabs
+//
+
+// Hide tabbable panes to start, show them when `.active`
+.tab-content {
+  > .tab-pane {
+    display: none;
+  }
+  > .active {
+    display: block;
+  }
+}
+
+
+//
+// Dropdowns
+//
+
+.nav-tabs .dropdown-menu {
+  // Make dropdown border overlap tab border
+  margin-top: -1px;
+  // Remove the top rounded corners here since there is a hard edge above the menu
+  @include border-top-radius(0);
+}
diff --git a/assets/stylesheets/bootstrap/_navbar.scss b/assets/stylesheets/bootstrap/_navbar.scss
index 11e5c01..61c2121 100644
--- a/assets/stylesheets/bootstrap/_navbar.scss
+++ b/assets/stylesheets/bootstrap/_navbar.scss
@@ -1,8 +1,3 @@
-//
-// Navbars
-// --------------------------------------------------
-
-
 // Wrapper and base class
 //
 // Provide a static navbar from which we expand to create full-width, fixed, and
@@ -10,115 +5,15 @@
 
 .navbar {
   position: relative;
-  min-height: $navbar-height; // Ensure a navbar always shows (e.g., without a .navbar-brand in collapsed mode)
-  margin-bottom: $navbar-margin-bottom;
-  border: 1px solid transparent;
-
-  // Prevent floats from breaking the navbar
-  @include clearfix;
-
-  @media (min-width: $grid-float-breakpoint) {
-    border-radius: $navbar-border-radius;
-  }
-}
-
-
-// Navbar heading
-//
-// Groups `.navbar-brand` and `.navbar-toggle` into a single component for easy
-// styling of responsive aspects.
-
-.navbar-header {
-  @include clearfix;
-
-  @media (min-width: $grid-float-breakpoint) {
-    float: left;
-  }
-}
-
-
-// Navbar collapse (body)
-//
-// Group your navbar content into this for easy collapsing and expanding across
-// various device sizes. By default, this content is collapsed when <768px, but
-// will expand past that for a horizontal display.
-//
-// To start (on mobile devices) the navbar links, forms, and buttons are stacked
-// vertically and include a `max-height` to overflow in case you have too much
-// content for the user's viewport.
-
-.navbar-collapse {
-  overflow-x: visible;
-  padding-right: $navbar-padding-horizontal;
-  padding-left:  $navbar-padding-horizontal;
-  border-top: 1px solid transparent;
-  box-shadow: inset 0 1px 0 rgba(255,255,255,.1);
+  padding: $navbar-padding-vertical $navbar-padding-horizontal;
   @include clearfix;
-  -webkit-overflow-scrolling: touch;
 
-  &.in {
-    overflow-y: auto;
-  }
-
-  @media (min-width: $grid-float-breakpoint) {
-    width: auto;
-    border-top: 0;
-    box-shadow: none;
-
-    &.collapse {
-      display: block !important;
-      height: auto !important;
-      padding-bottom: 0; // Override default setting
-      overflow: visible !important;
-    }
-
-    &.in {
-      overflow-y: visible;
-    }
-
-    // Undo the collapse side padding for navbars with containers to ensure
-    // alignment of right-aligned contents.
-    .navbar-fixed-top &,
-    .navbar-static-top &,
-    .navbar-fixed-bottom & {
-      padding-left: 0;
-      padding-right: 0;
-    }
-  }
-}
-
-.navbar-fixed-top,
-.navbar-fixed-bottom {
-  .navbar-collapse {
-    max-height: $navbar-collapse-max-height;
-
-    @media (max-device-width: $screen-xs-min) and (orientation: landscape) {
-      max-height: 200px;
-    }
-  }
-}
-
-
-// Both navbar header and collapse
-//
-// When a container is present, change the behavior of the header and collapse.
-
-.container,
-.container-fluid {
-  > .navbar-header,
-  > .navbar-collapse {
-    margin-right: -$navbar-padding-horizontal;
-    margin-left:  -$navbar-padding-horizontal;
-
-    @media (min-width: $grid-float-breakpoint) {
-      margin-right: 0;
-      margin-left:  0;
-    }
+  @include media-breakpoint-up(sm) {
+    @include border-radius($navbar-border-radius);
   }
 }
 
 
-//
 // Navbar alignment options
 //
 // Display the navbar across the entirety of the page or fixed it to the top or
@@ -127,10 +22,9 @@
 // Static top (unfixed, but 100% wide) navbar
 .navbar-static-top {
   z-index: $zindex-navbar;
-  border-width: 0 0 1px;
 
-  @media (min-width: $grid-float-breakpoint) {
-    border-radius: 0;
+  @include media-breakpoint-up(sm) {
+    @include border-radius(0);
   }
 }
 
@@ -141,522 +35,192 @@
   right: 0;
   left: 0;
   z-index: $zindex-navbar-fixed;
+  margin-bottom: 0; // override .navbar defaults
 
   // Undo the rounded corners
-  @media (min-width: $grid-float-breakpoint) {
-    border-radius: 0;
+  @include media-breakpoint-up(sm) {
+    @include border-radius(0);
   }
 }
+
 .navbar-fixed-top {
   top: 0;
-  border-width: 0 0 1px;
 }
+
 .navbar-fixed-bottom {
   bottom: 0;
-  margin-bottom: 0; // override .navbar defaults
-  border-width: 1px 0 0;
+}
+
+.navbar-sticky-top {
+  position: sticky;
+  top: 0;
+  z-index: $zindex-navbar-sticky;
+  width: 100%;
+
+  // Undo the rounded corners
+  @include media-breakpoint-up(sm) {
+    @include border-radius(0);
+  }
 }
 
 
+//
 // Brand/project name
+//
 
 .navbar-brand {
   float: left;
-  padding: $navbar-padding-vertical $navbar-padding-horizontal;
-  font-size: $font-size-large;
-  line-height: $line-height-computed;
-  height: $navbar-height;
+  margin-right: 1rem;
+  padding-top:    .25rem;
+  padding-bottom: .25rem;
+  font-size: $font-size-lg;
 
-  &:hover,
-  &:focus {
+  @include hover-focus {
     text-decoration: none;
   }
 
   > img {
     display: block;
   }
-
-  @media (min-width: $grid-float-breakpoint) {
-    .navbar > .container &,
-    .navbar > .container-fluid & {
-      margin-left: -$navbar-padding-horizontal;
-    }
-  }
 }
 
 
-// Navbar toggle
-//
-// Custom button for toggling the `.navbar-collapse`, powered by the collapse
-// JavaScript plugin.
-
-.navbar-toggle {
-  position: relative;
-  float: right;
+.navbar-divider {
+  float: left;
+  width: 1px;
+  padding-top: .425rem;
+  padding-bottom: .425rem;
+  overflow: hidden;
+  margin-left:  $navbar-padding-horizontal;
   margin-right: $navbar-padding-horizontal;
-  padding: 9px 10px;
-  @include navbar-vertical-align(34px);
-  background-color: transparent;
-  background-image: none; // Reset unusual Firefox-on-Android default style; see https://github.com/necolas/normalize.css/issues/214
-  border: 1px solid transparent;
-  border-radius: $border-radius-base;
-
-  // We remove the `outline` here, but later compensate by attaching `:hover`
-  // styles to `:focus`.
-  &:focus {
-    outline: 0;
-  }
 
-  // Bars
-  .icon-bar {
-    display: block;
-    width: 22px;
-    height: 2px;
-    border-radius: 1px;
-  }
-  .icon-bar + .icon-bar {
-    margin-top: 4px;
-  }
-
-  @media (min-width: $grid-float-breakpoint) {
-    display: none;
+  &:before {
+    content: '\00a0';
   }
 }
 
 
-// Navbar nav links
+// Navbar toggle
 //
-// Builds on top of the `.nav` components with its own modifier class to make
-// the nav the full height of the horizontal nav (above 768px).
-
-.navbar-nav {
-  margin: ($navbar-padding-vertical / 2) (-$navbar-padding-horizontal);
-
-  > li > a {
-    padding-top:    10px;
-    padding-bottom: 10px;
-    line-height: $line-height-computed;
-  }
-
-  @media (max-width: $grid-float-breakpoint-max) {
-    // Dropdowns get custom display when collapsed
-    .open .dropdown-menu {
-      position: static;
-      float: none;
-      width: auto;
-      margin-top: 0;
-      background-color: transparent;
-      border: 0;
-      box-shadow: none;
-      > li > a,
-      .dropdown-header {
-        padding: 5px 15px 5px 25px;
-      }
-      > li > a {
-        line-height: $line-height-computed;
-        &:hover,
-        &:focus {
-          background-image: none;
-        }
-      }
-    }
-  }
+// Custom button for toggling the `.navbar-collapse`, powered by the collapse
+// Bootstrap JavaScript plugin.
 
-  // Uncollapse the nav
-  @media (min-width: $grid-float-breakpoint) {
-    float: left;
-    margin: 0;
+.navbar-toggler {
+  padding: .5rem .75rem;
+  font-size: $font-size-lg;
+  line-height: 1;
+  background: none;
+  border: $border-width solid transparent;
+  @include border-radius($btn-border-radius);
 
-    > li {
-      float: left;
-      > a {
-        padding-top:    $navbar-padding-vertical;
-        padding-bottom: $navbar-padding-vertical;
-      }
-    }
+  @include hover-focus {
+    text-decoration: none;
   }
 }
 
-
-// Navbar form
-//
-// Extension of the `.form-inline` with some extra flavor for optimum display in
-// our navbars.
-
-.navbar-form {
-  margin-left: -$navbar-padding-horizontal;
-  margin-right: -$navbar-padding-horizontal;
-  padding: 10px $navbar-padding-horizontal;
-  border-top: 1px solid transparent;
-  border-bottom: 1px solid transparent;
-  $shadow: inset 0 1px 0 rgba(255,255,255,.1), 0 1px 0 rgba(255,255,255,.1);
-  @include box-shadow($shadow);
-
-  // Mixin behavior for optimum display
-  @include form-inline;
-
-  .form-group {
-    @media (max-width: $grid-float-breakpoint-max) {
-      margin-bottom: 5px;
-
-      &:last-child {
-        margin-bottom: 0;
-      }
+// Custom override for
+.navbar-toggleable {
+  &-xs {
+    @include media-breakpoint-up(sm) {
+      display: block !important;
     }
   }
-
-  // Vertically center in expanded, horizontal navbar
-  @include navbar-vertical-align($input-height-base);
-
-  // Undo 100% width for pull classes
-  @media (min-width: $grid-float-breakpoint) {
-    width: auto;
-    border: 0;
-    margin-left: 0;
-    margin-right: 0;
-    padding-top: 0;
-    padding-bottom: 0;
-    @include box-shadow(none);
-  }
-}
-
-
-// Dropdown menus
-
-// Menu position and menu carets
-.navbar-nav > li > .dropdown-menu {
-  margin-top: 0;
-  @include border-top-radius(0);
-}
-// Menu position and menu caret support for dropups via extra dropup class
-.navbar-fixed-bottom .navbar-nav > li > .dropdown-menu {
-  margin-bottom: 0;
-  @include border-top-radius($navbar-border-radius);
-  @include border-bottom-radius(0);
-}
-
-
-// Buttons in navbars
-//
-// Vertically center a button within a navbar (when *not* in a form).
-
-.navbar-btn {
-  @include navbar-vertical-align($input-height-base);
-
-  &.btn-sm {
-    @include navbar-vertical-align($input-height-small);
-  }
-  &.btn-xs {
-    @include navbar-vertical-align(22);
+  &-sm {
+    @include media-breakpoint-up(md) {
+      display: block !important;
+    }
   }
 }
 
 
-// Text in navbars
+// Navigation
 //
-// Add a class to make any element properly align itself vertically within the navbars.
-
-.navbar-text {
-  @include navbar-vertical-align($line-height-computed);
+// Custom navbar navigation built on the base `.nav` styles.
 
-  @media (min-width: $grid-float-breakpoint) {
+.navbar-nav {
+  .nav-item {
     float: left;
-    margin-left: $navbar-padding-horizontal;
-    margin-right: $navbar-padding-horizontal;
   }
-}
-
 
-// Component alignment
-//
-// Repurpose the pull utilities as their own navbar utilities to avoid specificity
-// issues with parents and chaining. Only do this when the navbar is uncollapsed
-// though so that navbar contents properly stack and align in mobile.
-//
-// Declared after the navbar components to ensure more specificity on the margins.
+  .nav-link {
+    display: block;
+    padding-top:    .425rem;
+    padding-bottom: .425rem;
 
-@media (min-width: $grid-float-breakpoint) {
-  .navbar-left {
-    float: left !important;
+    + .nav-link {
+      margin-left: 1rem;
+    }
   }
-  .navbar-right {
-    float: right !important;
-  margin-right: -$navbar-padding-horizontal;
 
-    ~ .navbar-right {
-      margin-right: 0;
-    }
+  .nav-item + .nav-item {
+    margin-left: 1rem;
   }
 }
 
-
-// Alternate navbars
-// --------------------------------------------------
-
-// Default navbar
-.navbar-default {
-  background-color: $navbar-default-bg;
-  border-color: $navbar-default-border;
-
+// Dark links against a light background
+.navbar-light {
   .navbar-brand {
-    color: $navbar-default-brand-color;
-    &:hover,
-    &:focus {
-      color: $navbar-default-brand-hover-color;
-      background-color: $navbar-default-brand-hover-bg;
-    }
-  }
-
-  .navbar-text {
-    color: $navbar-default-color;
-  }
-
-  .navbar-nav {
-    > li > a {
-      color: $navbar-default-link-color;
+    color: $navbar-light-active-color;
 
-      &:hover,
-      &:focus {
-        color: $navbar-default-link-hover-color;
-        background-color: $navbar-default-link-hover-bg;
-      }
-    }
-    > .active > a {
-      &,
-      &:hover,
-      &:focus {
-        color: $navbar-default-link-active-color;
-        background-color: $navbar-default-link-active-bg;
-      }
-    }
-    > .disabled > a {
-      &,
-      &:hover,
-      &:focus {
-        color: $navbar-default-link-disabled-color;
-        background-color: $navbar-default-link-disabled-bg;
-      }
-    }
-  }
-
-  .navbar-toggle {
-    border-color: $navbar-default-toggle-border-color;
-    &:hover,
-    &:focus {
-      background-color: $navbar-default-toggle-hover-bg;
-    }
-    .icon-bar {
-      background-color: $navbar-default-toggle-icon-bar-bg;
+    @include hover-focus {
+      color: $navbar-light-active-color;
     }
   }
 
-  .navbar-collapse,
-  .navbar-form {
-    border-color: $navbar-default-border;
-  }
-
-  // Dropdown menu items
   .navbar-nav {
-    // Remove background color from open dropdown
-    > .open > a {
-      &,
-      &:hover,
-      &:focus {
-        background-color: $navbar-default-link-active-bg;
-        color: $navbar-default-link-active-color;
-      }
-    }
+    .nav-link {
+      color: $navbar-light-color;
 
-    @media (max-width: $grid-float-breakpoint-max) {
-      // Dropdowns get custom display when collapsed
-      .open .dropdown-menu {
-        > li > a {
-          color: $navbar-default-link-color;
-          &:hover,
-          &:focus {
-            color: $navbar-default-link-hover-color;
-            background-color: $navbar-default-link-hover-bg;
-          }
-        }
-        > .active > a {
-          &,
-          &:hover,
-          &:focus {
-            color: $navbar-default-link-active-color;
-            background-color: $navbar-default-link-active-bg;
-          }
-        }
-        > .disabled > a {
-          &,
-          &:hover,
-          &:focus {
-            color: $navbar-default-link-disabled-color;
-            background-color: $navbar-default-link-disabled-bg;
-          }
-        }
+      @include hover-focus {
+        color: $navbar-light-hover-color;
       }
     }
-  }
-
 
-  // Links in navbars
-  //
-  // Add a class to ensure links outside the navbar nav are colored correctly.
-
-  .navbar-link {
-    color: $navbar-default-link-color;
-    &:hover {
-      color: $navbar-default-link-hover-color;
+    .open > .nav-link,
+    .active > .nav-link,
+    .nav-link.open,
+    .nav-link.active {
+      @include plain-hover-focus {
+        color: $navbar-light-active-color;
+      }
     }
   }
 
-  .btn-link {
-    color: $navbar-default-link-color;
-    &:hover,
-    &:focus {
-      color: $navbar-default-link-hover-color;
-    }
-    &[disabled],
-    fieldset[disabled] & {
-      &:hover,
-      &:focus {
-        color: $navbar-default-link-disabled-color;
-      }
-    }
+  .navbar-divider {
+    background-color: rgba(0,0,0,.075);
   }
 }
 
-// Inverse navbar
-
-.navbar-inverse {
-  background-color: $navbar-inverse-bg;
-  border-color: $navbar-inverse-border;
-
+// White links against a dark background
+.navbar-dark {
   .navbar-brand {
-    color: $navbar-inverse-brand-color;
-    &:hover,
-    &:focus {
-      color: $navbar-inverse-brand-hover-color;
-      background-color: $navbar-inverse-brand-hover-bg;
-    }
-  }
-
-  .navbar-text {
-    color: $navbar-inverse-color;
-  }
-
-  .navbar-nav {
-    > li > a {
-      color: $navbar-inverse-link-color;
+    color: $navbar-dark-active-color;
 
-      &:hover,
-      &:focus {
-        color: $navbar-inverse-link-hover-color;
-        background-color: $navbar-inverse-link-hover-bg;
-      }
-    }
-    > .active > a {
-      &,
-      &:hover,
-      &:focus {
-        color: $navbar-inverse-link-active-color;
-        background-color: $navbar-inverse-link-active-bg;
-      }
-    }
-    > .disabled > a {
-      &,
-      &:hover,
-      &:focus {
-        color: $navbar-inverse-link-disabled-color;
-        background-color: $navbar-inverse-link-disabled-bg;
-      }
+    @include hover-focus {
+      color: $navbar-dark-active-color;
     }
   }
 
-  // Darken the responsive nav toggle
-  .navbar-toggle {
-    border-color: $navbar-inverse-toggle-border-color;
-    &:hover,
-    &:focus {
-      background-color: $navbar-inverse-toggle-hover-bg;
-    }
-    .icon-bar {
-      background-color: $navbar-inverse-toggle-icon-bar-bg;
-    }
-  }
-
-  .navbar-collapse,
-  .navbar-form {
-    border-color: darken($navbar-inverse-bg, 7%);
-  }
-
-  // Dropdowns
   .navbar-nav {
-    > .open > a {
-      &,
-      &:hover,
-      &:focus {
-        background-color: $navbar-inverse-link-active-bg;
-        color: $navbar-inverse-link-active-color;
-      }
-    }
+    .nav-link {
+      color: $navbar-dark-color;
 
-    @media (max-width: $grid-float-breakpoint-max) {
-      // Dropdowns get custom display
-      .open .dropdown-menu {
-        > .dropdown-header {
-          border-color: $navbar-inverse-border;
-        }
-        .divider {
-          background-color: $navbar-inverse-border;
-        }
-        > li > a {
-          color: $navbar-inverse-link-color;
-          &:hover,
-          &:focus {
-            color: $navbar-inverse-link-hover-color;
-            background-color: $navbar-inverse-link-hover-bg;
-          }
-        }
-        > .active > a {
-          &,
-          &:hover,
-          &:focus {
-            color: $navbar-inverse-link-active-color;
-            background-color: $navbar-inverse-link-active-bg;
-          }
-        }
-        > .disabled > a {
-          &,
-          &:hover,
-          &:focus {
-            color: $navbar-inverse-link-disabled-color;
-            background-color: $navbar-inverse-link-disabled-bg;
-          }
-        }
+      @include hover-focus {
+        color: $navbar-dark-hover-color;
       }
     }
-  }
 
-  .navbar-link {
-    color: $navbar-inverse-link-color;
-    &:hover {
-      color: $navbar-inverse-link-hover-color;
+    .open > .nav-link,
+    .active > .nav-link,
+    .nav-link.open,
+    .nav-link.active {
+      @include plain-hover-focus {
+        color: $navbar-dark-active-color;
+      }
     }
   }
 
-  .btn-link {
-    color: $navbar-inverse-link-color;
-    &:hover,
-    &:focus {
-      color: $navbar-inverse-link-hover-color;
-    }
-    &[disabled],
-    fieldset[disabled] & {
-      &:hover,
-      &:focus {
-        color: $navbar-inverse-link-disabled-color;
-      }
-    }
+  .navbar-divider {
+    background-color: rgba(255,255,255,.075);
   }
 }
diff --git a/assets/stylesheets/bootstrap/_navs.scss b/assets/stylesheets/bootstrap/_navs.scss
deleted file mode 100644
index 9d369f3..0000000
--- a/assets/stylesheets/bootstrap/_navs.scss
+++ /dev/null
@@ -1,242 +0,0 @@
-//
-// Navs
-// --------------------------------------------------
-
-
-// Base class
-// --------------------------------------------------
-
-.nav {
-  margin-bottom: 0;
-  padding-left: 0; // Override default ul/ol
-  list-style: none;
-  @include clearfix;
-
-  > li {
-    position: relative;
-    display: block;
-
-    > a {
-      position: relative;
-      display: block;
-      padding: $nav-link-padding;
-      &:hover,
-      &:focus {
-        text-decoration: none;
-        background-color: $nav-link-hover-bg;
-      }
-    }
-
-    // Disabled state sets text to gray and nukes hover/tab effects
-    &.disabled > a {
-      color: $nav-disabled-link-color;
-
-      &:hover,
-      &:focus {
-        color: $nav-disabled-link-hover-color;
-        text-decoration: none;
-        background-color: transparent;
-        cursor: $cursor-disabled;
-      }
-    }
-  }
-
-  // Open dropdowns
-  .open > a {
-    &,
-    &:hover,
-    &:focus {
-      background-color: $nav-link-hover-bg;
-      border-color: $link-color;
-    }
-  }
-
-  // Nav dividers (deprecated with v3.0.1)
-  //
-  // This should have been removed in v3 with the dropping of `.nav-list`, but
-  // we missed it. We don't currently support this anywhere, but in the interest
-  // of maintaining backward compatibility in case you use it, it's deprecated.
-  .nav-divider {
-    @include nav-divider;
-  }
-
-  // Prevent IE8 from misplacing imgs
-  //
-  // See https://github.com/h5bp/html5-boilerplate/issues/984#issuecomment-3985989
-  > li > a > img {
-    max-width: none;
-  }
-}
-
-
-// Tabs
-// -------------------------
-
-// Give the tabs something to sit on
-.nav-tabs {
-  border-bottom: 1px solid $nav-tabs-border-color;
-  > li {
-    float: left;
-    // Make the list-items overlay the bottom border
-    margin-bottom: -1px;
-
-    // Actual tabs (as links)
-    > a {
-      margin-right: 2px;
-      line-height: $line-height-base;
-      border: 1px solid transparent;
-      border-radius: $border-radius-base $border-radius-base 0 0;
-      &:hover {
-        border-color: $nav-tabs-link-hover-border-color $nav-tabs-link-hover-border-color $nav-tabs-border-color;
-      }
-    }
-
-    // Active state, and its :hover to override normal :hover
-    &.active > a {
-      &,
-      &:hover,
-      &:focus {
-        color: $nav-tabs-active-link-hover-color;
-        background-color: $nav-tabs-active-link-hover-bg;
-        border: 1px solid $nav-tabs-active-link-hover-border-color;
-        border-bottom-color: transparent;
-        cursor: default;
-      }
-    }
-  }
-  // pulling this in mainly for less shorthand
-  &.nav-justified {
-    @extend .nav-justified;
-    @extend .nav-tabs-justified;
-  }
-}
-
-
-// Pills
-// -------------------------
-.nav-pills {
-  > li {
-    float: left;
-
-    // Links rendered as pills
-    > a {
-      border-radius: $nav-pills-border-radius;
-    }
-    + li {
-      margin-left: 2px;
-    }
-
-    // Active state
-    &.active > a {
-      &,
-      &:hover,
-      &:focus {
-        color: $nav-pills-active-link-hover-color;
-        background-color: $nav-pills-active-link-hover-bg;
-      }
-    }
-  }
-}
-
-
-// Stacked pills
-.nav-stacked {
-  > li {
-    float: none;
-    + li {
-      margin-top: 2px;
-      margin-left: 0; // no need for this gap between nav items
-    }
-  }
-}
-
-
-// Nav variations
-// --------------------------------------------------
-
-// Justified nav links
-// -------------------------
-
-.nav-justified {
-  width: 100%;
-
-  > li {
-    float: none;
-    > a {
-      text-align: center;
-      margin-bottom: 5px;
-    }
-  }
-
-  > .dropdown .dropdown-menu {
-    top: auto;
-    left: auto;
-  }
-
-  @media (min-width: $screen-sm-min) {
-    > li {
-      display: table-cell;
-      width: 1%;
-      > a {
-        margin-bottom: 0;
-      }
-    }
-  }
-}
-
-// Move borders to anchors instead of bottom of list
-//
-// Mixin for adding on top the shared `.nav-justified` styles for our tabs
-.nav-tabs-justified {
-  border-bottom: 0;
-
-  > li > a {
-    // Override margin from .nav-tabs
-    margin-right: 0;
-    border-radius: $border-radius-base;
-  }
-
-  > .active > a,
-  > .active > a:hover,
-  > .active > a:focus {
-    border: 1px solid $nav-tabs-justified-link-border-color;
-  }
-
-  @media (min-width: $screen-sm-min) {
-    > li > a {
-      border-bottom: 1px solid $nav-tabs-justified-link-border-color;
-      border-radius: $border-radius-base $border-radius-base 0 0;
-    }
-    > .active > a,
-    > .active > a:hover,
-    > .active > a:focus {
-      border-bottom-color: $nav-tabs-justified-active-link-border-color;
-    }
-  }
-}
-
-
-// Tabbable tabs
-// -------------------------
-
-// Hide tabbable panes to start, show them when `.active`
-.tab-content {
-  > .tab-pane {
-    display: none;
-  }
-  > .active {
-    display: block;
-  }
-}
-
-
-// Dropdowns
-// -------------------------
-
-// Specific dropdowns
-.nav-tabs .dropdown-menu {
-  // make dropdown border overlap tab border
-  margin-top: -1px;
-  // Remove the top rounded corners here since there is a hard edge above the menu
-  @include border-top-radius(0);
-}
diff --git a/assets/stylesheets/bootstrap/_normalize.scss b/assets/stylesheets/bootstrap/_normalize.scss
index 9dddf73..2e62b53 100644
--- a/assets/stylesheets/bootstrap/_normalize.scss
+++ b/assets/stylesheets/bootstrap/_normalize.scss
@@ -95,9 +95,13 @@ a {
 // active/hover state.
 //
 
-a:active,
-a:hover {
-  outline: 0;
+a {
+  &:active {
+    outline: 0;
+  }
+  &:hover {
+    outline: 0;
+  }
 }
 
 // Text-level semantics
diff --git a/assets/stylesheets/bootstrap/_pager.scss b/assets/stylesheets/bootstrap/_pager.scss
index c234217..06036c2 100644
--- a/assets/stylesheets/bootstrap/_pager.scss
+++ b/assets/stylesheets/bootstrap/_pager.scss
@@ -1,16 +1,14 @@
-//
-// Pager pagination
-// --------------------------------------------------
-
-
 .pager {
   padding-left: 0;
-  margin: $line-height-computed 0;
-  list-style: none;
+  margin-top: $spacer-y;
+  margin-bottom: $spacer-y;
   text-align: center;
-  @include clearfix;
+  list-style: none;
+  @include clearfix();
+
   li {
     display: inline;
+
     > a,
     > span {
       display: inline-block;
@@ -20,35 +18,40 @@
       border-radius: $pager-border-radius;
     }
 
-    > a:hover,
-    > a:focus {
-      text-decoration: none;
-      background-color: $pager-hover-bg;
+    > a {
+      @include hover-focus {
+        text-decoration: none;
+        background-color: $pager-hover-bg;
+      }
     }
   }
 
-  .next {
-    > a,
+  .disabled {
+    > a {
+      @include plain-hover-focus {
+        color: $pager-disabled-color;
+        cursor: $cursor-disabled;
+        background-color: $pager-bg;
+      }
+    }
     > span {
-      float: right;
+      color: $pager-disabled-color;
+      cursor: $cursor-disabled;
+      background-color: $pager-bg;
     }
   }
+}
 
-  .previous {
-    > a,
-    > span {
-      float: left;
-    }
+.pager-next {
+  > a,
+  > span {
+    float: right;
   }
+}
 
-  .disabled {
-    > a,
-    > a:hover,
-    > a:focus,
-    > span {
-      color: $pager-disabled-color;
-      background-color: $pager-bg;
-      cursor: $cursor-disabled;
-    }
+.pager-prev {
+  > a,
+  > span {
+    float: left;
   }
 }
diff --git a/assets/stylesheets/bootstrap/_pagination.scss b/assets/stylesheets/bootstrap/_pagination.scss
index fb23f91..a52b9d1 100644
--- a/assets/stylesheets/bootstrap/_pagination.scss
+++ b/assets/stylesheets/bootstrap/_pagination.scss
@@ -1,46 +1,43 @@
-//
-// Pagination (multiple pages)
-// --------------------------------------------------
 .pagination {
   display: inline-block;
   padding-left: 0;
-  margin: $line-height-computed 0;
-  border-radius: $border-radius-base;
+  margin-top: $spacer-y;
+  margin-bottom: $spacer-y;
+  @include border-radius();
 
   > li {
     display: inline; // Remove list-style and block-level defaults
+
     > a,
     > span {
       position: relative;
       float: left; // Collapse white-space
-      padding: $padding-base-vertical $padding-base-horizontal;
-      line-height: $line-height-base;
-      text-decoration: none;
+      padding: $pagination-padding-y $pagination-padding-x;
+      margin-left: -1px;
+      line-height: $line-height;
       color: $pagination-color;
+      text-decoration: none;
       background-color: $pagination-bg;
       border: 1px solid $pagination-border;
-      margin-left: -1px;
     }
     &:first-child {
       > a,
       > span {
         margin-left: 0;
-        @include border-left-radius($border-radius-base);
+        @include border-left-radius($border-radius);
       }
     }
     &:last-child {
       > a,
       > span {
-        @include border-right-radius($border-radius-base);
+        @include border-right-radius($border-radius);
       }
     }
   }
 
   > li > a,
   > li > span {
-    &:hover,
-    &:focus {
-      z-index: 3;
+    @include hover-focus {
       color: $pagination-hover-color;
       background-color: $pagination-hover-bg;
       border-color: $pagination-hover-border;
@@ -49,41 +46,37 @@
 
   > .active > a,
   > .active > span {
-    &,
-    &:hover,
-    &:focus {
+    @include plain-hover-focus {
       z-index: 2;
       color: $pagination-active-color;
+      cursor: default;
       background-color: $pagination-active-bg;
       border-color: $pagination-active-border;
-      cursor: default;
     }
   }
 
   > .disabled {
     > span,
-    > span:hover,
-    > span:focus,
-    > a,
-    > a:hover,
-    > a:focus {
-      color: $pagination-disabled-color;
-      background-color: $pagination-disabled-bg;
-      border-color: $pagination-disabled-border;
-      cursor: $cursor-disabled;
+    > a {
+      @include plain-hover-focus {
+        color: $pagination-disabled-color;
+        cursor: $cursor-disabled;
+        background-color: $pagination-disabled-bg;
+        border-color: $pagination-disabled-border;
+      }
     }
   }
 }
 
+
+//
 // Sizing
-// --------------------------------------------------
+//
 
-// Large
 .pagination-lg {
-  @include pagination-size($padding-large-vertical, $padding-large-horizontal, $font-size-large, $line-height-large, $border-radius-large);
+  @include pagination-size($pagination-padding-y-lg, $pagination-padding-x-lg, $font-size-lg, $line-height-lg, $border-radius-lg);
 }
 
-// Small
 .pagination-sm {
-  @include pagination-size($padding-small-vertical, $padding-small-horizontal, $font-size-small, $line-height-small, $border-radius-small);
+  @include pagination-size($pagination-padding-y-sm, $pagination-padding-x-sm, $font-size-sm, $line-height-sm, $border-radius-sm);
 }
diff --git a/assets/stylesheets/bootstrap/_panels.scss b/assets/stylesheets/bootstrap/_panels.scss
deleted file mode 100644
index be9410f..0000000
--- a/assets/stylesheets/bootstrap/_panels.scss
+++ /dev/null
@@ -1,271 +0,0 @@
-//
-// Panels
-// --------------------------------------------------
-
-
-// Base class
-.panel {
-  margin-bottom: $line-height-computed;
-  background-color: $panel-bg;
-  border: 1px solid transparent;
-  border-radius: $panel-border-radius;
-  @include box-shadow(0 1px 1px rgba(0,0,0,.05));
-}
-
-// Panel contents
-.panel-body {
-  padding: $panel-body-padding;
-  @include clearfix;
-}
-
-// Optional heading
-.panel-heading {
-  padding: $panel-heading-padding;
-  border-bottom: 1px solid transparent;
-  @include border-top-radius(($panel-border-radius - 1));
-
-  > .dropdown .dropdown-toggle {
-    color: inherit;
-  }
-}
-
-// Within heading, strip any `h*` tag of its default margins for spacing.
-.panel-title {
-  margin-top: 0;
-  margin-bottom: 0;
-  font-size: ceil(($font-size-base * 1.125));
-  color: inherit;
-
-  > a,
-  > small,
-  > .small,
-  > small > a,
-  > .small > a {
-    color: inherit;
-  }
-}
-
-// Optional footer (stays gray in every modifier class)
-.panel-footer {
-  padding: $panel-footer-padding;
-  background-color: $panel-footer-bg;
-  border-top: 1px solid $panel-inner-border;
-  @include border-bottom-radius(($panel-border-radius - 1));
-}
-
-
-// List groups in panels
-//
-// By default, space out list group content from panel headings to account for
-// any kind of custom content between the two.
-
-.panel {
-  > .list-group,
-  > .panel-collapse > .list-group {
-    margin-bottom: 0;
-
-    .list-group-item {
-      border-width: 1px 0;
-      border-radius: 0;
-    }
-
-    // Add border top radius for first one
-    &:first-child {
-      .list-group-item:first-child {
-        border-top: 0;
-        @include border-top-radius(($panel-border-radius - 1));
-      }
-    }
-
-    // Add border bottom radius for last one
-    &:last-child {
-      .list-group-item:last-child {
-        border-bottom: 0;
-        @include border-bottom-radius(($panel-border-radius - 1));
-      }
-    }
-  }
-  > .panel-heading + .panel-collapse > .list-group {
-    .list-group-item:first-child {
-      @include border-top-radius(0);
-    }
-  }
-}
-// Collapse space between when there's no additional content.
-.panel-heading + .list-group {
-  .list-group-item:first-child {
-    border-top-width: 0;
-  }
-}
-.list-group + .panel-footer {
-  border-top-width: 0;
-}
-
-// Tables in panels
-//
-// Place a non-bordered `.table` within a panel (not within a `.panel-body`) and
-// watch it go full width.
-
-.panel {
-  > .table,
-  > .table-responsive > .table,
-  > .panel-collapse > .table {
-    margin-bottom: 0;
-
-    caption {
-      padding-left: $panel-body-padding;
-      padding-right: $panel-body-padding;
-    }
-  }
-  // Add border top radius for first one
-  > .table:first-child,
-  > .table-responsive:first-child > .table:first-child {
-    @include border-top-radius(($panel-border-radius - 1));
-
-    > thead:first-child,
-    > tbody:first-child {
-      > tr:first-child {
-        border-top-left-radius: ($panel-border-radius - 1);
-        border-top-right-radius: ($panel-border-radius - 1);
-
-        td:first-child,
-        th:first-child {
-          border-top-left-radius: ($panel-border-radius - 1);
-        }
-        td:last-child,
-        th:last-child {
-          border-top-right-radius: ($panel-border-radius - 1);
-        }
-      }
-    }
-  }
-  // Add border bottom radius for last one
-  > .table:last-child,
-  > .table-responsive:last-child > .table:last-child {
-    @include border-bottom-radius(($panel-border-radius - 1));
-
-    > tbody:last-child,
-    > tfoot:last-child {
-      > tr:last-child {
-        border-bottom-left-radius: ($panel-border-radius - 1);
-        border-bottom-right-radius: ($panel-border-radius - 1);
-
-        td:first-child,
-        th:first-child {
-          border-bottom-left-radius: ($panel-border-radius - 1);
-        }
-        td:last-child,
-        th:last-child {
-          border-bottom-right-radius: ($panel-border-radius - 1);
-        }
-      }
-    }
-  }
-  > .panel-body + .table,
-  > .panel-body + .table-responsive,
-  > .table + .panel-body,
-  > .table-responsive + .panel-body {
-    border-top: 1px solid $table-border-color;
-  }
-  > .table > tbody:first-child > tr:first-child th,
-  > .table > tbody:first-child > tr:first-child td {
-    border-top: 0;
-  }
-  > .table-bordered,
-  > .table-responsive > .table-bordered {
-    border: 0;
-    > thead,
-    > tbody,
-    > tfoot {
-      > tr {
-        > th:first-child,
-        > td:first-child {
-          border-left: 0;
-        }
-        > th:last-child,
-        > td:last-child {
-          border-right: 0;
-        }
-      }
-    }
-    > thead,
-    > tbody {
-      > tr:first-child {
-        > td,
-        > th {
-          border-bottom: 0;
-        }
-      }
-    }
-    > tbody,
-    > tfoot {
-      > tr:last-child {
-        > td,
-        > th {
-          border-bottom: 0;
-        }
-      }
-    }
-  }
-  > .table-responsive {
-    border: 0;
-    margin-bottom: 0;
-  }
-}
-
-
-// Collapsable panels (aka, accordion)
-//
-// Wrap a series of panels in `.panel-group` to turn them into an accordion with
-// the help of our collapse JavaScript plugin.
-
-.panel-group {
-  margin-bottom: $line-height-computed;
-
-  // Tighten up margin so it's only between panels
-  .panel {
-    margin-bottom: 0;
-    border-radius: $panel-border-radius;
-
-    + .panel {
-      margin-top: 5px;
-    }
-  }
-
-  .panel-heading {
-    border-bottom: 0;
-
-    + .panel-collapse > .panel-body,
-    + .panel-collapse > .list-group {
-      border-top: 1px solid $panel-inner-border;
-    }
-  }
-
-  .panel-footer {
-    border-top: 0;
-    + .panel-collapse .panel-body {
-      border-bottom: 1px solid $panel-inner-border;
-    }
-  }
-}
-
-
-// Contextual variations
-.panel-default {
-  @include panel-variant($panel-default-border, $panel-default-text, $panel-default-heading-bg, $panel-default-border);
-}
-.panel-primary {
-  @include panel-variant($panel-primary-border, $panel-primary-text, $panel-primary-heading-bg, $panel-primary-border);
-}
-.panel-success {
-  @include panel-variant($panel-success-border, $panel-success-text, $panel-success-heading-bg, $panel-success-border);
-}
-.panel-info {
-  @include panel-variant($panel-info-border, $panel-info-text, $panel-info-heading-bg, $panel-info-border);
-}
-.panel-warning {
-  @include panel-variant($panel-warning-border, $panel-warning-text, $panel-warning-heading-bg, $panel-warning-border);
-}
-.panel-danger {
-  @include panel-variant($panel-danger-border, $panel-danger-text, $panel-danger-heading-bg, $panel-danger-border);
-}
diff --git a/assets/stylesheets/bootstrap/_popover.scss b/assets/stylesheets/bootstrap/_popover.scss
new file mode 100644
index 0000000..2bd8415
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_popover.scss
@@ -0,0 +1,140 @@
+.popover {
+  position: absolute;
+  top: 0;
+  left: 0;
+  z-index: $zindex-popover;
+  display: block;
+  max-width: $popover-max-width;
+  padding: 1px;
+  // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
+  // So reset our font and text properties to avoid inheriting weird values.
+  @include reset-text();
+  font-size: $font-size-sm;
+  background-color: $popover-bg;
+  background-clip: padding-box;
+  border: 1px solid $popover-border-color;
+  @include border-radius($border-radius-lg);
+  @include box-shadow(0 5px 10px rgba(0,0,0,.2));
+
+
+  // Popover directions
+
+  &.popover-top,
+  &.bs-tether-element-attached-bottom {
+    margin-top: -$popover-arrow-width;
+
+    .popover-arrow {
+      bottom: -$popover-arrow-outer-width;
+      left: 50%;
+      margin-left: -$popover-arrow-outer-width;
+      border-top-color: $popover-arrow-outer-color;
+      border-bottom-width: 0;
+      &:after {
+        bottom: 1px;
+        margin-left: -$popover-arrow-width;
+        content: "";
+        border-top-color: $popover-arrow-color;
+        border-bottom-width: 0;
+      }
+    }
+  }
+
+  &.popover-right,
+  &.bs-tether-element-attached-left {
+    margin-left: $popover-arrow-width;
+
+    .popover-arrow {
+      top: 50%;
+      left: -$popover-arrow-outer-width;
+      margin-top: -$popover-arrow-outer-width;
+      border-right-color: $popover-arrow-outer-color;
+      border-left-width: 0;
+      &:after {
+        bottom: -$popover-arrow-width;
+        left: 1px;
+        content: "";
+        border-right-color: $popover-arrow-color;
+        border-left-width: 0;
+      }
+    }
+  }
+
+  &.popover-bottom,
+  &.bs-tether-element-attached-top {
+    margin-top: $popover-arrow-width;
+
+    .popover-arrow {
+      top: -$popover-arrow-outer-width;
+      left: 50%;
+      margin-left: -$popover-arrow-outer-width;
+      border-top-width: 0;
+      border-bottom-color: $popover-arrow-outer-color;
+      &:after {
+        top: 1px;
+        margin-left: -$popover-arrow-width;
+        content: "";
+        border-top-width: 0;
+        border-bottom-color: $popover-arrow-color;
+      }
+    }
+  }
+
+  &.popover-left,
+  &.bs-tether-element-attached-right {
+    margin-left: -$popover-arrow-width;
+
+    .popover-arrow {
+      top: 50%;
+      right: -$popover-arrow-outer-width;
+      margin-top: -$popover-arrow-outer-width;
+      border-right-width: 0;
+      border-left-color: $popover-arrow-outer-color;
+      &:after {
+        right: 1px;
+        bottom: -$popover-arrow-width;
+        content: "";
+        border-right-width: 0;
+        border-left-color: $popover-arrow-color;
+      }
+    }
+  }
+}
+
+
+// Offset the popover to account for the popover arrow
+.popover-title {
+  padding: 8px 14px;
+  margin: 0; // reset heading margin
+  font-size: $font-size-base;
+  background-color: $popover-title-bg;
+  border-bottom: 1px solid darken($popover-title-bg, 5%);
+  @include border-radius(($border-radius-lg - 1) ($border-radius-lg - 1) 0 0);
+}
+
+.popover-content {
+  padding: 9px 14px;
+}
+
+
+// Arrows
+//
+// .popover-arrow is outer, .popover-arrow:after is inner
+
+.popover-arrow {
+  &,
+  &:after {
+    position: absolute;
+    display: block;
+    width: 0;
+    height: 0;
+    border-color: transparent;
+    border-style: solid;
+  }
+}
+.popover-arrow {
+  border-width: $popover-arrow-outer-width;
+}
+.popover-arrow:after {
+  content: "";
+  border-width: $popover-arrow-width;
+}
diff --git a/assets/stylesheets/bootstrap/_popovers.scss b/assets/stylesheets/bootstrap/_popovers.scss
deleted file mode 100644
index 9b90a2e..0000000
--- a/assets/stylesheets/bootstrap/_popovers.scss
+++ /dev/null
@@ -1,131 +0,0 @@
-//
-// Popovers
-// --------------------------------------------------
-
-
-.popover {
-  position: absolute;
-  top: 0;
-  left: 0;
-  z-index: $zindex-popover;
-  display: none;
-  max-width: $popover-max-width;
-  padding: 1px;
-  // Our parent element can be arbitrary since popovers are by default inserted as a sibling of their target element.
-  // So reset our font and text properties to avoid inheriting weird values.
-  @include reset-text;
-  font-size: $font-size-base;
-
-  background-color: $popover-bg;
-  background-clip: padding-box;
-  border: 1px solid $popover-fallback-border-color;
-  border: 1px solid $popover-border-color;
-  border-radius: $border-radius-large;
-  @include box-shadow(0 5px 10px rgba(0,0,0,.2));
-
-  // Offset the popover to account for the popover arrow
-  &.top     { margin-top: -$popover-arrow-width; }
-  &.right   { margin-left: $popover-arrow-width; }
-  &.bottom  { margin-top: $popover-arrow-width; }
-  &.left    { margin-left: -$popover-arrow-width; }
-}
-
-.popover-title {
-  margin: 0; // reset heading margin
-  padding: 8px 14px;
-  font-size: $font-size-base;
-  background-color: $popover-title-bg;
-  border-bottom: 1px solid darken($popover-title-bg, 5%);
-  border-radius: ($border-radius-large - 1) ($border-radius-large - 1) 0 0;
-}
-
-.popover-content {
-  padding: 9px 14px;
-}
-
-// Arrows
-//
-// .arrow is outer, .arrow:after is inner
-
-.popover > .arrow {
-  &,
-  &:after {
-    position: absolute;
-    display: block;
-    width: 0;
-    height: 0;
-    border-color: transparent;
-    border-style: solid;
-  }
-}
-.popover > .arrow {
-  border-width: $popover-arrow-outer-width;
-}
-.popover > .arrow:after {
-  border-width: $popover-arrow-width;
-  content: "";
-}
-
-.popover {
-  &.top > .arrow {
-    left: 50%;
-    margin-left: -$popover-arrow-outer-width;
-    border-bottom-width: 0;
-    border-top-color: $popover-arrow-outer-fallback-color; // IE8 fallback
-    border-top-color: $popover-arrow-outer-color;
-    bottom: -$popover-arrow-outer-width;
-    &:after {
-      content: " ";
-      bottom: 1px;
-      margin-left: -$popover-arrow-width;
-      border-bottom-width: 0;
-      border-top-color: $popover-arrow-color;
-    }
-  }
-  &.right > .arrow {
-    top: 50%;
-    left: -$popover-arrow-outer-width;
-    margin-top: -$popover-arrow-outer-width;
-    border-left-width: 0;
-    border-right-color: $popover-arrow-outer-fallback-color; // IE8 fallback
-    border-right-color: $popover-arrow-outer-color;
-    &:after {
-      content: " ";
-      left: 1px;
-      bottom: -$popover-arrow-width;
-      border-left-width: 0;
-      border-right-color: $popover-arrow-color;
-    }
-  }
-  &.bottom > .arrow {
-    left: 50%;
-    margin-left: -$popover-arrow-outer-width;
-    border-top-width: 0;
-    border-bottom-color: $popover-arrow-outer-fallback-color; // IE8 fallback
-    border-bottom-color: $popover-arrow-outer-color;
-    top: -$popover-arrow-outer-width;
-    &:after {
-      content: " ";
-      top: 1px;
-      margin-left: -$popover-arrow-width;
-      border-top-width: 0;
-      border-bottom-color: $popover-arrow-color;
-    }
-  }
-
-  &.left > .arrow {
-    top: 50%;
-    right: -$popover-arrow-outer-width;
-    margin-top: -$popover-arrow-outer-width;
-    border-right-width: 0;
-    border-left-color: $popover-arrow-outer-fallback-color; // IE8 fallback
-    border-left-color: $popover-arrow-outer-color;
-    &:after {
-      content: " ";
-      right: 1px;
-      border-right-width: 0;
-      border-left-color: $popover-arrow-color;
-      bottom: -$popover-arrow-width;
-    }
-  }
-}
diff --git a/assets/stylesheets/bootstrap/_print.scss b/assets/stylesheets/bootstrap/_print.scss
index 66e54ab..4bbece5 100644
--- a/assets/stylesheets/bootstrap/_print.scss
+++ b/assets/stylesheets/bootstrap/_print.scss
@@ -1,4 +1,4 @@
-/*! Source: https://github.com/h5bp/html5-boilerplate/blob/master/src/css/main.css */
+// Source: https://github.com/h5bp/html5-boilerplate/blob/master/src/css/main.css
 
 // ==========================================================================
 // Print styles.
@@ -6,96 +6,83 @@
 // ==========================================================================
 
 @media print {
-    *,
-    *:before,
-    *:after {
-        background: transparent !important;
-        color: #000 !important; // Black prints faster: h5bp.com/s
-        box-shadow: none !important;
-        text-shadow: none !important;
-    }
-
-    a,
-    a:visited {
-        text-decoration: underline;
-    }
-
-    a[href]:after {
-        content: " (" attr(href) ")";
-    }
-
-    abbr[title]:after {
-        content: " (" attr(title) ")";
-    }
-
-    // Don't show links that are fragment identifiers,
-    // or use the `javascript:` pseudo protocol
-    a[href^="#"]:after,
-    a[href^="javascript:"]:after {
-        content: "";
-    }
-
-    pre,
-    blockquote {
-        border: 1px solid #999;
-        page-break-inside: avoid;
-    }
-
-    thead {
-        display: table-header-group; // h5bp.com/t
-    }
-
-    tr,
-    img {
-        page-break-inside: avoid;
-    }
-
-    img {
-        max-width: 100% !important;
-    }
-
-    p,
-    h2,
-    h3 {
-        orphans: 3;
-        widows: 3;
-    }
-
-    h2,
-    h3 {
-        page-break-after: avoid;
-    }
-
-    // Bootstrap specific changes start
-
-    // Bootstrap components
-    .navbar {
-        display: none;
-    }
-    .btn,
-    .dropup > .btn {
-        > .caret {
-            border-top-color: #000 !important;
-        }
-    }
-    .label {
-        border: 1px solid #000;
-    }
-
-    .table {
-        border-collapse: collapse !important;
-
-        td,
-        th {
-            background-color: #fff !important;
-        }
-    }
-    .table-bordered {
-        th,
-        td {
-            border: 1px solid #ddd !important;
-        }
-    }
-
-    // Bootstrap specific changes end
+  *,
+  *:before,
+  *:after {
+    text-shadow: none !important;
+    box-shadow: none !important;
+  }
+
+  a,
+  a:visited {
+    text-decoration: underline;
+  }
+
+  abbr[title]:after {
+    content: " (" attr(title) ")";
+  }
+
+  pre,
+  blockquote {
+    border: 1px solid #999;
+    page-break-inside: avoid;
+  }
+
+  thead {
+    display: table-header-group; // h5bp.com/t
+  }
+
+  tr,
+  img {
+    page-break-inside: avoid;
+  }
+
+  img {
+    max-width: 100% !important;
+  }
+
+  p,
+  h2,
+  h3 {
+    orphans: 3;
+    widows: 3;
+  }
+
+  h2,
+  h3 {
+    page-break-after: avoid;
+  }
+
+  // Bootstrap specific changes start
+
+  // Bootstrap components
+  .navbar {
+    display: none;
+  }
+  .btn,
+  .dropup > .btn {
+    > .caret {
+      border-top-color: #000 !important;
+    }
+  }
+  .label {
+    border: 1px solid #000;
+  }
+
+  .table {
+    border-collapse: collapse !important;
+
+    td,
+    th {
+      background-color: #fff !important;
+    }
+  }
+  .table-bordered {
+    th,
+    td {
+      border: 1px solid #ddd !important;
+    }
+  }
+
+  // Bootstrap specific changes end
 }
diff --git a/assets/stylesheets/bootstrap/_progress-bars.scss b/assets/stylesheets/bootstrap/_progress-bars.scss
deleted file mode 100644
index 343df63..0000000
--- a/assets/stylesheets/bootstrap/_progress-bars.scss
+++ /dev/null
@@ -1,87 +0,0 @@
-//
-// Progress bars
-// --------------------------------------------------
-
-
-// Bar animations
-// -------------------------
-
-// WebKit
-@-webkit-keyframes progress-bar-stripes {
-  from  { background-position: 40px 0; }
-  to    { background-position: 0 0; }
-}
-
-// Spec and IE10+
-@keyframes progress-bar-stripes {
-  from  { background-position: 40px 0; }
-  to    { background-position: 0 0; }
-}
-
-
-// Bar itself
-// -------------------------
-
-// Outer container
-.progress {
-  overflow: hidden;
-  height: $line-height-computed;
-  margin-bottom: $line-height-computed;
-  background-color: $progress-bg;
-  border-radius: $progress-border-radius;
-  @include box-shadow(inset 0 1px 2px rgba(0,0,0,.1));
-}
-
-// Bar of progress
-.progress-bar {
-  float: left;
-  width: 0%;
-  height: 100%;
-  font-size: $font-size-small;
-  line-height: $line-height-computed;
-  color: $progress-bar-color;
-  text-align: center;
-  background-color: $progress-bar-bg;
-  @include box-shadow(inset 0 -1px 0 rgba(0,0,0,.15));
-  @include transition(width .6s ease);
-}
-
-// Striped bars
-//
-// `.progress-striped .progress-bar` is deprecated as of v3.2.0 in favor of the
-// `.progress-bar-striped` class, which you just add to an existing
-// `.progress-bar`.
-.progress-striped .progress-bar,
-.progress-bar-striped {
-  @include gradient-striped;
-  background-size: 40px 40px;
-}
-
-// Call animation for the active one
-//
-// `.progress.active .progress-bar` is deprecated as of v3.2.0 in favor of the
-// `.progress-bar.active` approach.
-.progress.active .progress-bar,
-.progress-bar.active {
-  @include animation(progress-bar-stripes 2s linear infinite);
-}
-
-
-// Variations
-// -------------------------
-
-.progress-bar-success {
-  @include progress-bar-variant($progress-bar-success-bg);
-}
-
-.progress-bar-info {
-  @include progress-bar-variant($progress-bar-info-bg);
-}
-
-.progress-bar-warning {
-  @include progress-bar-variant($progress-bar-warning-bg);
-}
-
-.progress-bar-danger {
-  @include progress-bar-variant($progress-bar-danger-bg);
-}
diff --git a/assets/stylesheets/bootstrap/_progress.scss b/assets/stylesheets/bootstrap/_progress.scss
new file mode 100644
index 0000000..a93a634
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_progress.scss
@@ -0,0 +1,154 @@
+//
+// Progress animations
+//
+
+@keyframes progress-bar-stripes {
+  from  { background-position: $spacer-y 0; }
+  to    { background-position: 0 0; }
+}
+
+
+//
+// Basic progress bar
+//
+
+.progress {
+  display: block;
+  width: 100%;
+  height: $spacer-y; // todo: make a new var for this
+  margin-bottom: $spacer-y;
+}
+.progress[value] {
+  // IE10 uses `color` to set the bar background-color
+  color: #0074d9;
+  // Remove Firefox and Opera border
+  border: 0;
+  // Reset the default appearance
+  appearance: none;
+}
+.progress[value]::-webkit-progress-bar {
+  background-color: #eee;
+  @include border-radius($border-radius);
+  @include box-shadow(inset 0 .1rem .1rem rgba(0,0,0,.1));
+}
+.progress[value]::-webkit-progress-value::before {
+  content: attr(value);
+}
+.progress[value]::-webkit-progress-value {
+  background-color: #0074d9;
+  border-top-left-radius: $border-radius;
+  border-bottom-left-radius: $border-radius;
+}
+.progress[value="100"]::-webkit-progress-value {
+  border-top-right-radius: $border-radius;
+  border-bottom-right-radius: $border-radius;
+}
+
+// Firefox styles must be entirely separate or it busts Webkit styles.
+//
+// Commented out for now because linter.
+//
+// $-moz-document url-prefix() {
+//   .progress[value] {
+//     background-color: #eee;
+//     .border-radius($border-radius);
+//     .box-shadow(inset 0 .1rem .1rem rgba(0,0,0,.1));
+//   }
+//   .progress[value]::-moz-progress-bar {
+//     background-color: #0074d9;
+//     border-top-left-radius: $border-radius;
+//     border-bottom-left-radius: $border-radius;
+//   }
+//   .progress[value="0"]::-moz-progress-bar {
+//     color: $gray-light;
+//     min-width: 2rem;
+//     background-color: transparent;
+//     background-image: none;
+//   }
+//   .progress[value="100"]::-moz-progress-bar {
+//     border-top-right-radius: $border-radius;
+//     border-bottom-right-radius: $border-radius;
+//   }
+// }
+
+// IE9 hacks to accompany custom markup. We don't need to scope this via media queries, but I feel better doing it anyway.
+@media screen and (min-width:0\0) {
+  .progress {
+    background-color: #eee;
+    @include border-radius($border-radius);
+    @include box-shadow(inset 0 .1rem .1rem rgba(0,0,0,.1));
+  }
+  .progress-bar {
+    display: inline-block;
+    height: $spacer-y;
+    text-indent: -999rem; // Simulate hiding of value as in native `<progress>`
+    background-color: #0074d9;
+    border-top-left-radius: $border-radius;
+    border-bottom-left-radius: $border-radius;
+  }
+  .progress[width^="0"] {
+    min-width: 2rem;
+    color: $gray-light;
+    background-color: transparent;
+    background-image: none;
+  }
+  .progress[width="100%"] {
+    border-top-right-radius: $border-radius;
+    border-bottom-right-radius: $border-radius;
+  }
+}
+
+
+//
+// Striped
+//
+
+.progress-striped[value]::-webkit-progress-value {
+  @include gradient-striped();
+  background-size: $spacer-y $spacer-y;
+}
+.progress-striped[value]::-moz-progress-bar {
+  @include gradient-striped();
+  background-size: $spacer-y $spacer-y;
+}
+@media screen and (min-width:0\0) {
+  .progress-bar-striped {
+    @include gradient-striped();
+    background-size: $spacer-y $spacer-y;
+  }
+}
+
+
+//
+// Animated
+//
+
+.progress-animated[value]::-webkit-progress-value {
+  animation: progress-bar-stripes 2s linear infinite;
+}
+.progress-animated[value]::-moz-progress-bar {
+  animation: progress-bar-stripes 2s linear infinite;
+}
+@media screen and (min-width:0\0) {
+  .progress-animated .progress-bar-striped {
+    animation: progress-bar-stripes 2s linear infinite;
+  }
+}
+
+
+//
+// Variations
+//
+
+.progress-success {
+  @include progress-variant($progress-bar-success-bg);
+}
+.progress-info {
+  @include progress-variant($progress-bar-info-bg);
+}
+.progress-warning {
+  @include progress-variant($progress-bar-warning-bg);
+}
+.progress-danger {
+  @include progress-variant($progress-bar-danger-bg);
+}
diff --git a/assets/stylesheets/bootstrap/_reboot.scss b/assets/stylesheets/bootstrap/_reboot.scss
new file mode 100644
index 0000000..fe466da
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_reboot.scss
@@ -0,0 +1,295 @@
+// Reboot
+//
+// Global resets to common HTML elements and more for easier usage by Bootstrap.
+// Builds on the resets of Normalize.css.
+
+
+// Reset the box-sizing
+//
+// Change from `box-sizing: content-box` to `border-box` so that when you add
+// `padding` or `border`s to an element, the overall declared `width` does not
+// change. For example, `width: 100px;` will always be `100px` despite the
+// `border: 10px solid red;` and `padding: 20px;`.
+//
+// Heads up! This reset may cause conflicts with some third-party widgets. For
+// recommendations on resolving such conflicts, see
+// http://getbootstrap.com/getting-started/#third-box-sizing.
+//
+// Credit: shttp://css-tricks.com/inheriting-box-sizing-probably-slightly-better-best-practice/
+
+html {
+  box-sizing: border-box;
+}
+
+*,
+*:before,
+*:after {
+  box-sizing: inherit;
+}
+
+
+// Make viewport responsive
+//
+// @viewport is needed because IE 10+ doesn't honor <meta name="viewport"> in
+// some cases. See http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/.
+// Eventually @viewport will replace <meta name="viewport">. It's been manually
+// prefixed for forward-compatibility.
+//
+// However, `device-width` is broken on IE 10 on Windows (Phone) 8,
+// (see http://timkadlec.com/2013/01/windows-phone-8-and-device-width/ and https://github.com/twbs/bootstrap/issues/10497)
+// and the fix for that involves a snippet of JavaScript to sniff the user agent
+// and apply some conditional CSS.
+//
+// See http://getbootstrap.com/getting-started/#support-ie10-width for the relevant hack.
+
+
+// Wrap `@viewport` with `@at-root` for when folks do a nested import (e.g.,
+// `.class-name { @import "bootstrap"; }`).
+@at-root {
+  @-moz-viewport      { width: device-width; }
+  @-ms-viewport       { width: device-width; }
+  @-o-viewport        { width: device-width; }
+  @-webkit-viewport   { width: device-width; }
+  @viewport           { width: device-width; }
+}
+
+//
+// Reset HTML, body, and more
+//
+
+html {
+  // Sets a specific default `font-size` for user with `rem` type scales.
+  font-size: $font-size-root;
+  // Changes the default tap highlight to be completely transparent in iOS.
+  -webkit-tap-highlight-color: rgba(0,0,0,0);
+}
+
+body {
+  // Make the `body` use the `font-size-root`
+  font-family: $font-family-base;
+  font-size: $font-size-base;
+  line-height: $line-height;
+  // Go easy on the eyes and use something other than `#000` for text
+  color: $body-color;
+  // By default, `<body>` has no `background-color` so we set one as a best practice.
+  background-color: $body-bg;
+}
+
+
+//
+// Typography
+//
+
+// Remove top margins from headings
+//
+// By default, `<h1>`-`<h6>` all receive top and bottom margins. We nuke the top
+// margin for easier control within type scales as it avoids margin collapsing.
+h1, h2, h3, h4, h5, h6 {
+  margin-top: 0;
+  margin-bottom: .5rem;
+}
+
+// Reset margins on paragraphs
+//
+// Similarly, the top margin on `<p>`s get reset. However, we also reset the
+// bottom margin to use `rem` units instead of `em`.
+p {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+// Abbreviations and acronyms
+abbr[title],
+// Add data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257
+abbr[data-original-title] {
+  cursor: help;
+  border-bottom: 1px dotted $abbr-border-color;
+}
+
+address {
+  margin-bottom: 1rem;
+  font-style: normal;
+  line-height: inherit;
+}
+
+ol,
+ul,
+dl {
+  margin-top: 0;
+  margin-bottom: 1rem;
+}
+
+ol ol,
+ul ul,
+ol ul,
+ul ol {
+  margin-bottom: 0;
+}
+
+dt {
+  font-weight: bold;
+}
+
+dd {
+  margin-bottom: .5rem;
+  margin-left: 0; // Undo browser default
+}
+
+blockquote {
+  margin: 0 0 1rem;
+}
+
+
+//
+// Links
+//
+
+a {
+  color: $link-color;
+  text-decoration: none;
+
+  @include hover-focus {
+    color: $link-hover-color;
+    text-decoration: $link-hover-decoration;
+  }
+
+  &:focus {
+    @include tab-focus();
+  }
+}
+
+
+//
+// Code
+//
+
+pre {
+  // Remove browser default top margin
+  margin-top: 0;
+  // Reset browser default of `1em` to use `rem`s
+  margin-bottom: 1rem;
+}
+
+
+//
+// Figures
+//
+
+figure {
+  // Normalize adds `margin` to `figure`s as browsers apply it inconsistently.
+  // We reset that to create a better flow in-page.
+  margin: 0 0 1rem;
+}
+
+
+
+//
+// Images
+//
+
+img {
+  // By default, `<img>`s are `inline-block`. This assumes that, and vertically
+  // centers them. This won't apply should you reset them to `block` level.
+  vertical-align: middle;
+}
+
+
+// iOS "clickable elements" fix for role="button"
+//
+// Fixes "clickability" issue (and more generally, the firing of events such as focus as well)
+// for traditionally non-focusable elements with role="button"
+// see https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
+// Upstream patch for normalize.css submitted: https://github.com/necolas/normalize.css/pull/379 - remove this fix once that is merged
+
+[role="button"] {
+  cursor: pointer;
+}
+
+
+//
+// Tables
+//
+
+table {
+  // Reset for nesting within parents with `background-color`.
+  background-color: $table-bg;
+}
+
+caption {
+  padding-top: $table-cell-padding;
+  padding-bottom: $table-cell-padding;
+  color: $text-muted;
+  text-align: left;
+  caption-side: bottom;
+}
+
+th {
+  // Centered by default, but left-align-ed to match the `td`s below.
+  text-align: left;
+}
+
+
+//
+// Forms
+//
+
+label {
+  // Allow labels can use `margin` for spacing.
+  display: inline-block;
+  margin-bottom: .5rem;
+}
+
+input,
+button,
+select,
+textarea {
+  // Remove all `margin`s so our classes don't have to do it themselves.
+  margin: 0;
+  // Normalize includes `font: inherit;`, so `font-family`. `font-size`, etc are
+  // properly inherited. However, `line-height` isn't addressed there. Using this
+  // ensures we don't need to unnecessarily redeclare the global font stack.
+  line-height: inherit;
+}
+
+textarea {
+  // Textareas should really only resize vertically so they don't break their (horizontal) containers.
+  resize: vertical;
+}
+
+fieldset {
+  // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
+  // so we reset that to ensure it behaves more like a standard block element.
+  // See https://github.com/twbs/bootstrap/issues/12359.
+  min-width: 0;
+  // Reset the default outline behavior of fieldsets so they don't affect page layout.
+  padding: 0;
+  margin: 0;
+  border: 0;
+}
+
+legend {
+  // Reset the entire legend element to match the `fieldset`
+  display: block;
+  width: 100%;
+  padding: 0;
+  margin-bottom: .5rem;
+  font-size: 1.5rem;
+  line-height: inherit;
+//  border: 0;
+}
+
+input[type="search"] {
+  // This overrides the extra rounded corners on search inputs in iOS so that our
+  // `.form-control` class can properly style them. Note that this cannot simply
+  // be added to `.form-control` as it's not specific enough. For details, see
+  // https://github.com/twbs/bootstrap/issues/11586.
+  -webkit-appearance: none;
+}
+
+// todo: needed?
+output {
+  display: inline-block;
+//  font-size: $font-size-base;
+//  line-height: $line-height;
+//  color: $input-color;
+}
diff --git a/assets/stylesheets/bootstrap/_responsive-embed.scss b/assets/stylesheets/bootstrap/_responsive-embed.scss
index 080a511..ac4dc74 100644
--- a/assets/stylesheets/bootstrap/_responsive-embed.scss
+++ b/assets/stylesheets/bootstrap/_responsive-embed.scss
@@ -1,5 +1,3 @@
-// Embeds responsive
-//
 // Credit: Nicolas Gallagher and SUIT CSS.
 
 .embed-responsive {
@@ -16,20 +14,25 @@
   video {
     position: absolute;
     top: 0;
-    left: 0;
     bottom: 0;
-    height: 100%;
+    left: 0;
     width: 100%;
+    height: 100%;
     border: 0;
   }
 }
 
+// Modifier class for 21:9 aspect ratio
+.embed-responsive-21by9 {
+  padding-bottom: percentage(9 / 21);
+}
+
 // Modifier class for 16:9 aspect ratio
 .embed-responsive-16by9 {
-  padding-bottom: 56.25%;
+  padding-bottom: percentage(9 / 16);
 }
 
 // Modifier class for 4:3 aspect ratio
 .embed-responsive-4by3 {
-  padding-bottom: 75%;
+  padding-bottom: percentage(3 / 4);
 }
diff --git a/assets/stylesheets/bootstrap/_responsive-utilities.scss b/assets/stylesheets/bootstrap/_responsive-utilities.scss
deleted file mode 100644
index f3f0c83..0000000
--- a/assets/stylesheets/bootstrap/_responsive-utilities.scss
+++ /dev/null
@@ -1,179 +0,0 @@
-//
-// Responsive: Utility classes
-// --------------------------------------------------
-
-
-// IE10 in Windows (Phone) 8
-//
-// Support for responsive views via media queries is kind of borked in IE10, for
-// Surface/desktop in split view and for Windows Phone 8. This particular fix
-// must be accompanied by a snippet of JavaScript to sniff the user agent and
-// apply some conditional CSS to *only* the Surface/desktop Windows 8. Look at
-// our Getting Started page for more information on this bug.
-//
-// For more information, see the following:
-//
-// Issue: https://github.com/twbs/bootstrap/issues/10497
-// Docs: http://getbootstrap.com/getting-started/#support-ie10-width
-// Source: http://timkadlec.com/2013/01/windows-phone-8-and-device-width/
-// Source: http://timkadlec.com/2012/10/ie10-snap-mode-and-responsive-design/
-
-@at-root {
-  @-ms-viewport {
-    width: device-width;
-  }
-}
-
-
-// Visibility utilities
-// Note: Deprecated .visible-xs, .visible-sm, .visible-md, and .visible-lg as of v3.2.0
-
-@include responsive-invisibility('.visible-xs');
-@include responsive-invisibility('.visible-sm');
-@include responsive-invisibility('.visible-md');
-@include responsive-invisibility('.visible-lg');
-
-.visible-xs-block,
-.visible-xs-inline,
-.visible-xs-inline-block,
-.visible-sm-block,
-.visible-sm-inline,
-.visible-sm-inline-block,
-.visible-md-block,
-.visible-md-inline,
-.visible-md-inline-block,
-.visible-lg-block,
-.visible-lg-inline,
-.visible-lg-inline-block {
-  display: none !important;
-}
-
-@media (max-width: $screen-xs-max) {
-  @include responsive-visibility('.visible-xs');
-}
-.visible-xs-block {
-  @media (max-width: $screen-xs-max) {
-    display: block !important;
-  }
-}
-.visible-xs-inline {
-  @media (max-width: $screen-xs-max) {
-    display: inline !important;
-  }
-}
-.visible-xs-inline-block {
-  @media (max-width: $screen-xs-max) {
-    display: inline-block !important;
-  }
-}
-
-@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
-  @include responsive-visibility('.visible-sm');
-}
-.visible-sm-block {
-  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
-    display: block !important;
-  }
-}
-.visible-sm-inline {
-  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
-    display: inline !important;
-  }
-}
-.visible-sm-inline-block {
-  @media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
-    display: inline-block !important;
-  }
-}
-
-@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
-  @include responsive-visibility('.visible-md');
-}
-.visible-md-block {
-  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
-    display: block !important;
-  }
-}
-.visible-md-inline {
-  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
-    display: inline !important;
-  }
-}
-.visible-md-inline-block {
-  @media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
-    display: inline-block !important;
-  }
-}
-
-@media (min-width: $screen-lg-min) {
-  @include responsive-visibility('.visible-lg');
-}
-.visible-lg-block {
-  @media (min-width: $screen-lg-min) {
-    display: block !important;
-  }
-}
-.visible-lg-inline {
-  @media (min-width: $screen-lg-min) {
-    display: inline !important;
-  }
-}
-.visible-lg-inline-block {
-  @media (min-width: $screen-lg-min) {
-    display: inline-block !important;
-  }
-}
-
-@media (max-width: $screen-xs-max) {
-  @include responsive-invisibility('.hidden-xs');
-}
-
-@media (min-width: $screen-sm-min) and (max-width: $screen-sm-max) {
-  @include responsive-invisibility('.hidden-sm');
-}
-
-@media (min-width: $screen-md-min) and (max-width: $screen-md-max) {
-  @include responsive-invisibility('.hidden-md');
-}
-
-@media (min-width: $screen-lg-min) {
-  @include responsive-invisibility('.hidden-lg');
-}
-
-
-// Print utilities
-//
-// Media queries are placed on the inside to be mixin-friendly.
-
-// Note: Deprecated .visible-print as of v3.2.0
-
-@include responsive-invisibility('.visible-print');
-
-@media print {
-  @include responsive-visibility('.visible-print');
-}
-.visible-print-block {
-  display: none !important;
-
-  @media print {
-    display: block !important;
-  }
-}
-.visible-print-inline {
-  display: none !important;
-
-  @media print {
-    display: inline !important;
-  }
-}
-.visible-print-inline-block {
-  display: none !important;
-
-  @media print {
-    display: inline-block !important;
-  }
-}
-
-@media print {
-  @include responsive-invisibility('.hidden-print');
-}
diff --git a/assets/stylesheets/bootstrap/_scaffolding.scss b/assets/stylesheets/bootstrap/_scaffolding.scss
deleted file mode 100644
index 83adb5d..0000000
--- a/assets/stylesheets/bootstrap/_scaffolding.scss
+++ /dev/null
@@ -1,161 +0,0 @@
-//
-// Scaffolding
-// --------------------------------------------------
-
-
-// Reset the box-sizing
-//
-// Heads up! This reset may cause conflicts with some third-party widgets.
-// For recommendations on resolving such conflicts, see
-// http://getbootstrap.com/getting-started/#third-box-sizing
-* {
-  @include box-sizing(border-box);
-}
-*:before,
-*:after {
-  @include box-sizing(border-box);
-}
-
-
-// Body reset
-
-html {
-  font-size: 10px;
-  -webkit-tap-highlight-color: rgba(0,0,0,0);
-}
-
-body {
-  font-family: $font-family-base;
-  font-size: $font-size-base;
-  line-height: $line-height-base;
-  color: $text-color;
-  background-color: $body-bg;
-}
-
-// Reset fonts for relevant elements
-input,
-button,
-select,
-textarea {
-  font-family: inherit;
-  font-size: inherit;
-  line-height: inherit;
-}
-
-
-// Links
-
-a {
-  color: $link-color;
-  text-decoration: none;
-
-  &:hover,
-  &:focus {
-    color: $link-hover-color;
-    text-decoration: $link-hover-decoration;
-  }
-
-  &:focus {
-    @include tab-focus;
-  }
-}
-
-
-// Figures
-//
-// We reset this here because previously Normalize had no `figure` margins. This
-// ensures we don't break anyone's use of the element.
-
-figure {
-  margin: 0;
-}
-
-
-// Images
-
-img {
-  vertical-align: middle;
-}
-
-// Responsive images (ensure images don't scale beyond their parents)
-.img-responsive {
-  @include img-responsive;
-}
-
-// Rounded corners
-.img-rounded {
-  border-radius: $border-radius-large;
-}
-
-// Image thumbnails
-//
-// Heads up! This is mixin-ed into thumbnails.less for `.thumbnail`.
-.img-thumbnail {
-  padding: $thumbnail-padding;
-  line-height: $line-height-base;
-  background-color: $thumbnail-bg;
-  border: 1px solid $thumbnail-border;
-  border-radius: $thumbnail-border-radius;
-  @include transition(all .2s ease-in-out);
-
-  // Keep them at most 100% wide
-  @include img-responsive(inline-block);
-}
-
-// Perfect circle
-.img-circle {
-  border-radius: 50%; // set radius in percents
-}
-
-
-// Horizontal rules
-
-hr {
-  margin-top:    $line-height-computed;
-  margin-bottom: $line-height-computed;
-  border: 0;
-  border-top: 1px solid $hr-border;
-}
-
-
-// Only display content to screen readers
-//
-// See: http://a11yproject.com/posts/how-to-hide-content/
-
-.sr-only {
-  position: absolute;
-  width: 1px;
-  height: 1px;
-  margin: -1px;
-  padding: 0;
-  overflow: hidden;
-  clip: rect(0,0,0,0);
-  border: 0;
-}
-
-// Use in conjunction with .sr-only to only display content when it's focused.
-// Useful for "Skip to main content" links; see http://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
-// Credit: HTML5 Boilerplate
-
-.sr-only-focusable {
-  &:active,
-  &:focus {
-    position: static;
-    width: auto;
-    height: auto;
-    margin: 0;
-    overflow: visible;
-    clip: auto;
-  }
-}
-
-
-// iOS "clickable elements" fix for role="button"
-//
-// Fixes "clickability" issue (and more generally, the firing of events such as focus as well)
-// for traditionally non-focusable elements with role="button"
-// see https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile
-
-[role="button"] {
-  cursor: pointer;
-}
diff --git a/assets/stylesheets/bootstrap/_tables.scss b/assets/stylesheets/bootstrap/_tables.scss
index affcc58..5f0698f 100644
--- a/assets/stylesheets/bootstrap/_tables.scss
+++ b/assets/stylesheets/bootstrap/_tables.scss
@@ -1,82 +1,43 @@
 //
-// Tables
-// --------------------------------------------------
-
-
-table {
-  background-color: $table-bg;
-}
-caption {
-  padding-top: $table-cell-padding;
-  padding-bottom: $table-cell-padding;
-  color: $text-muted;
-  text-align: left;
-}
-th {
-  text-align: left;
-}
-
-
-// Baseline styles
+// Basic Bootstrap table
+//
 
 .table {
   width: 100%;
   max-width: 100%;
-  margin-bottom: $line-height-computed;
-  // Cells
-  > thead,
-  > tbody,
-  > tfoot {
-    > tr {
-      > th,
-      > td {
-        padding: $table-cell-padding;
-        line-height: $line-height-base;
-        vertical-align: top;
-        border-top: 1px solid $table-border-color;
-      }
-    }
+  margin-bottom: $spacer;
+
+  th,
+  td {
+    padding: $table-cell-padding;
+    line-height: $line-height;
+    vertical-align: top;
+    border-top: 1px solid $table-border-color;
   }
-  // Bottom align for column headings
-  > thead > tr > th {
+
+  thead th {
     vertical-align: bottom;
     border-bottom: 2px solid $table-border-color;
   }
-  // Remove top border from thead by default
-  > caption + thead,
-  > colgroup + thead,
-  > thead:first-child {
-    > tr:first-child {
-      > th,
-      > td {
-        border-top: 0;
-      }
-    }
-  }
-  // Account for multiple tbody instances
-  > tbody + tbody {
+
+  tbody + tbody {
     border-top: 2px solid $table-border-color;
   }
 
-  // Nesting
   .table {
     background-color: $body-bg;
   }
 }
 
 
+//
 // Condensed table w/ half padding
+//
 
-.table-condensed {
-  > thead,
-  > tbody,
-  > tfoot {
-    > tr {
-      > th,
-      > td {
-        padding: $table-condensed-cell-padding;
-      }
-    }
+.table-sm {
+  th,
+  td {
+    padding: $table-sm-cell-padding;
   }
 }
 
@@ -87,19 +48,15 @@ th {
 
 .table-bordered {
   border: 1px solid $table-border-color;
-  > thead,
-  > tbody,
-  > tfoot {
-    > tr {
-      > th,
-      > td {
-        border: 1px solid $table-border-color;
-      }
-    }
+
+  th,
+  td {
+    border: 1px solid $table-border-color;
   }
-  > thead > tr {
-    > th,
-    > td {
+
+  thead {
+    th,
+    td {
       border-bottom-width: 2px;
     }
   }
@@ -111,7 +68,7 @@ th {
 // Default zebra-stripe styles (alternating gray and transparent backgrounds)
 
 .table-striped {
-  > tbody > tr:nth-of-type(odd) {
+  tbody tr:nth-of-type(odd) {
     background-color: $table-bg-accent;
   }
 }
@@ -122,28 +79,9 @@ th {
 // Placed here since it has to come after the potential zebra striping
 
 .table-hover {
-  > tbody > tr:hover {
-    background-color: $table-bg-hover;
-  }
-}
-
-
-// Table cell sizing
-//
-// Reset default table behavior
-
-table col[class*="col-"] {
-  position: static; // Prevent border hiding in Firefox and IE9-11 (see https://github.com/twbs/bootstrap/issues/11623)
-  float: none;
-  display: table-column;
-}
-table {
-  td,
-  th {
-    &[class*="col-"] {
-      position: static; // Prevent border hiding in Firefox and IE9-11 (see https://github.com/twbs/bootstrap/issues/11623)
-      float: none;
-      display: table-cell;
+  tbody tr {
+    @include hover {
+      background-color: $table-bg-hover;
     }
   }
 }
@@ -155,11 +93,11 @@ table {
 // inheritance to nested tables.
 
 // Generate the contextual variants
-@include table-row-variant('active', $table-bg-active);
-@include table-row-variant('success', $state-success-bg);
-@include table-row-variant('info', $state-info-bg);
-@include table-row-variant('warning', $state-warning-bg);
-@include table-row-variant('danger', $state-danger-bg);
+@include table-row-variant(active, $table-bg-active);
+@include table-row-variant(success, $state-success-bg);
+@include table-row-variant(info, $state-info-bg);
+@include table-row-variant(warning, $state-warning-bg);
+@include table-row-variant(danger, $state-danger-bg);
 
 
 // Responsive tables
@@ -169,66 +107,87 @@ table {
 // will display normally.
 
 .table-responsive {
+  display: block;
+  width: 100%;
   overflow-x: auto;
-  min-height: 0.01%; // Workaround for IE9 bug (see https://github.com/twbs/bootstrap/issues/14837)
 
-  @media screen and (max-width: $screen-xs-max) {
-    width: 100%;
-    margin-bottom: ($line-height-computed * 0.75);
-    overflow-y: hidden;
-    -ms-overflow-style: -ms-autohiding-scrollbar;
-    border: 1px solid $table-border-color;
+  // Todo: find out if we need this still.
+  //
+  // border: 1px solid $table-border-color;
+  // -ms-overflow-style: -ms-autohiding-scrollbar;
+  // min-height: 0.01%; // Workaround for IE9 bug (see https://github.com/twbs/bootstrap/issues/14837)
+}
 
-    // Tighten up spacing
-    > .table {
-      margin-bottom: 0;
-
-      // Ensure the content doesn't wrap
-      > thead,
-      > tbody,
-      > tfoot {
-        > tr {
-          > th,
-          > td {
-            white-space: nowrap;
-          }
-        }
-      }
+
+.thead-inverse {
+  th {
+    color: #fff;
+    background-color: $gray-dark;
+  }
+}
+.thead-default {
+  th {
+    color: $gray;
+    background-color: $gray-lighter;
+  }
+}
+
+.table-inverse {
+  color: $gray-lighter;
+  background-color: $gray-dark;
+
+  &.table-bordered {
+    border: 0;
+  }
+
+  th,
+  td,
+  thead th {
+    border-color: $gray;
+  }
+}
+
+
+.table-reflow {
+  thead {
+    float: left;
+  }
+
+  tbody {
+    display: block;
+    white-space: nowrap;
+  }
+
+  th,
+  td {
+    border-top: 1px solid $table-border-color;
+    border-left: 1px solid $table-border-color;
+
+    &:last-child {
+      border-right: 1px solid $table-border-color;
     }
+  }
 
-    // Special overrides for the bordered tables
-    > .table-bordered {
-      border: 0;
-
-      // Nuke the appropriate borders so that the parent can handle them
-      > thead,
-      > tbody,
-      > tfoot {
-        > tr {
-          > th:first-child,
-          > td:first-child {
-            border-left: 0;
-          }
-          > th:last-child,
-          > td:last-child {
-            border-right: 0;
-          }
+  thead,
+  tbody,
+  tfoot {
+    &:last-child {
+      tr:last-child {
+        th,
+        td {
+          border-bottom: 1px solid $table-border-color;
         }
       }
+    }
+  }
 
-      // Only nuke the last row's bottom-border in `tbody` and `tfoot` since
-      // chances are there will be only one `tr` in a `thead` and that would
-      // remove the border altogether.
-      > tbody,
-      > tfoot {
-        > tr:last-child {
-          > th,
-          > td {
-            border-bottom: 0;
-          }
-        }
-      }
+  tr {
+    float: left;
 
+    th,
+    td {
+      display: block !important;
+      border: 1px solid $table-border-color;
     }
   }
 }
diff --git a/assets/stylesheets/bootstrap/_theme.scss b/assets/stylesheets/bootstrap/_theme.scss
deleted file mode 100644
index df571ea..0000000
--- a/assets/stylesheets/bootstrap/_theme.scss
+++ /dev/null
@@ -1,291 +0,0 @@
-/*!
- * Bootstrap v3.3.5 (http://getbootstrap.com)
- * Copyright 2011-2015 Twitter, Inc.
- * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
- */
-
-//
-// Load core variables and mixins
-// --------------------------------------------------
-
-@import "variables";
-@import "mixins";
-
-
-//
-// Buttons
-// --------------------------------------------------
-
-// Common styles
-.btn-default,
-.btn-primary,
-.btn-success,
-.btn-info,
-.btn-warning,
-.btn-danger {
-  text-shadow: 0 -1px 0 rgba(0,0,0,.2);
-  $shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 1px rgba(0,0,0,.075);
-  @include box-shadow($shadow);
-
-  // Reset the shadow
-  &:active,
-  &.active {
-    @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
-  }
-
-  &.disabled,
-  &[disabled],
-  fieldset[disabled] & {
-    @include box-shadow(none);
-  }
-
-  .badge {
-    text-shadow: none;
-  }
-}
-
-// Mixin for generating new styles
-@mixin btn-styles($btn-color: #555) {
-  @include gradient-vertical($start-color: $btn-color, $end-color: darken($btn-color, 12%));
-  @include reset-filter; // Disable gradients for IE9 because filter bleeds through rounded corners; see https://github.com/twbs/bootstrap/issues/10620
-  background-repeat: repeat-x;
-  border-color: darken($btn-color, 14%);
-
-  &:hover,
-  &:focus  {
-    background-color: darken($btn-color, 12%);
-    background-position: 0 -15px;
-  }
-
-  &:active,
-  &.active {
-    background-color: darken($btn-color, 12%);
-    border-color: darken($btn-color, 14%);
-  }
-
-  &.disabled,
-  &[disabled],
-  fieldset[disabled] & {
-    &,
-    &:hover,
-    &:focus,
-    &.focus,
-    &:active,
-    &.active {
-      background-color: darken($btn-color, 12%);
-      background-image: none;
-    }
-  }
-}
-
-// Common styles
-.btn {
-  // Remove the gradient for the pressed/active state
-  &:active,
-  &.active {
-    background-image: none;
-  }
-}
-
-// Apply the mixin to the buttons
-.btn-default { @include btn-styles($btn-default-bg); text-shadow: 0 1px 0 #fff; border-color: #ccc; }
-.btn-primary { @include btn-styles($btn-primary-bg); }
-.btn-success { @include btn-styles($btn-success-bg); }
-.btn-info    { @include btn-styles($btn-info-bg); }
-.btn-warning { @include btn-styles($btn-warning-bg); }
-.btn-danger  { @include btn-styles($btn-danger-bg); }
-
-
-//
-// Images
-// --------------------------------------------------
-
-.thumbnail,
-.img-thumbnail {
-  @include box-shadow(0 1px 2px rgba(0,0,0,.075));
-}
-
-
-//
-// Dropdowns
-// --------------------------------------------------
-
-.dropdown-menu > li > a:hover,
-.dropdown-menu > li > a:focus {
-  @include gradient-vertical($start-color: $dropdown-link-hover-bg, $end-color: darken($dropdown-link-hover-bg, 5%));
-  background-color: darken($dropdown-link-hover-bg, 5%);
-}
-.dropdown-menu > .active > a,
-.dropdown-menu > .active > a:hover,
-.dropdown-menu > .active > a:focus {
-  @include gradient-vertical($start-color: $dropdown-link-active-bg, $end-color: darken($dropdown-link-active-bg, 5%));
-  background-color: darken($dropdown-link-active-bg, 5%);
-}
-
-
-//
-// Navbar
-// --------------------------------------------------
-
-// Default navbar
-.navbar-default {
-  @include gradient-vertical($start-color: lighten($navbar-default-bg, 10%), $end-color: $navbar-default-bg);
-  @include reset-filter; // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered
-  border-radius: $navbar-border-radius;
-  $shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 5px rgba(0,0,0,.075);
-  @include box-shadow($shadow);
-
-  .navbar-nav > .open > a,
-  .navbar-nav > .active > a {
-    @include gradient-vertical($start-color: darken($navbar-default-link-active-bg, 5%), $end-color: darken($navbar-default-link-active-bg, 2%));
-    @include box-shadow(inset 0 3px 9px rgba(0,0,0,.075));
-  }
-}
-.navbar-brand,
-.navbar-nav > li > a {
-  text-shadow: 0 1px 0 rgba(255,255,255,.25);
-}
-
-// Inverted navbar
-.navbar-inverse {
-  @include gradient-vertical($start-color: lighten($navbar-inverse-bg, 10%), $end-color: $navbar-inverse-bg);
-  @include reset-filter; // Remove gradient in IE<10 to fix bug where dropdowns don't get triggered; see https://github.com/twbs/bootstrap/issues/10257
-  border-radius: $navbar-border-radius;
-  .navbar-nav > .open > a,
-  .navbar-nav > .active > a {
-    @include gradient-vertical($start-color: $navbar-inverse-link-active-bg, $end-color: lighten($navbar-inverse-link-active-bg, 2.5%));
-    @include box-shadow(inset 0 3px 9px rgba(0,0,0,.25));
-  }
-
-  .navbar-brand,
-  .navbar-nav > li > a {
-    text-shadow: 0 -1px 0 rgba(0,0,0,.25);
-  }
-}
-
-// Undo rounded corners in static and fixed navbars
-.navbar-static-top,
-.navbar-fixed-top,
-.navbar-fixed-bottom {
-  border-radius: 0;
-}
-
-// Fix active state of dropdown items in collapsed mode
-@media (max-width: $grid-float-breakpoint-max) {
-  .navbar .navbar-nav .open .dropdown-menu > .active > a {
-    &,
-    &:hover,
-    &:focus {
-      color: #fff;
-      @include gradient-vertical($start-color: $dropdown-link-active-bg, $end-color: darken($dropdown-link-active-bg, 5%));
-    }
-  }
-}
-
-
-//
-// Alerts
-// --------------------------------------------------
-
-// Common styles
-.alert {
-  text-shadow: 0 1px 0 rgba(255,255,255,.2);
-  $shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 1px 2px rgba(0,0,0,.05);
-  @include box-shadow($shadow);
-}
-
-// Mixin for generating new styles
-@mixin alert-styles($color) {
-  @include gradient-vertical($start-color: $color, $end-color: darken($color, 7.5%));
-  border-color: darken($color, 15%);
-}
-
-// Apply the mixin to the alerts
-.alert-success    { @include alert-styles($alert-success-bg); }
-.alert-info       { @include alert-styles($alert-info-bg); }
-.alert-warning    { @include alert-styles($alert-warning-bg); }
-.alert-danger     { @include alert-styles($alert-danger-bg); }
-
-
-//
-// Progress bars
-// --------------------------------------------------
-
-// Give the progress background some depth
-.progress {
-  @include gradient-vertical($start-color: darken($progress-bg, 4%), $end-color: $progress-bg)
-}
-
-// Mixin for generating new styles
-@mixin progress-bar-styles($color) {
-  @include gradient-vertical($start-color: $color, $end-color: darken($color, 10%));
-}
-
-// Apply the mixin to the progress bars
-.progress-bar            { @include progress-bar-styles($progress-bar-bg); }
-.progress-bar-success    { @include progress-bar-styles($progress-bar-success-bg); }
-.progress-bar-info       { @include progress-bar-styles($progress-bar-info-bg); }
-.progress-bar-warning    { @include progress-bar-styles($progress-bar-warning-bg); }
-.progress-bar-danger     { @include progress-bar-styles($progress-bar-danger-bg); }
-
-// Reset the striped class because our mixins don't do multiple gradients and
-// the above custom styles override the new `.progress-bar-striped` in v3.2.0.
-.progress-bar-striped {
-  @include gradient-striped;
-}
-
-
-//
-// List groups
-// --------------------------------------------------
-
-.list-group {
-  border-radius: $border-radius-base;
-  @include box-shadow(0 1px 2px rgba(0,0,0,.075));
-}
-.list-group-item.active,
-.list-group-item.active:hover,
-.list-group-item.active:focus {
-  text-shadow: 0 -1px 0 darken($list-group-active-bg, 10%);
-  @include gradient-vertical($start-color: $list-group-active-bg, $end-color: darken($list-group-active-bg, 7.5%));
-  border-color: darken($list-group-active-border, 7.5%);
-
-  .badge {
-    text-shadow: none;
-  }
-}
-
-
-//
-// Panels
-// --------------------------------------------------
-
-// Common styles
-.panel {
-  @include box-shadow(0 1px 2px rgba(0,0,0,.05));
-}
-
-// Mixin for generating new styles
-@mixin panel-heading-styles($color) {
-  @include gradient-vertical($start-color: $color, $end-color: darken($color, 5%));
-}
-
-// Apply the mixin to the panel headings only
-.panel-default > .panel-heading   { @include panel-heading-styles($panel-default-heading-bg); }
-.panel-primary > .panel-heading   { @include panel-heading-styles($panel-primary-heading-bg); }
-.panel-success > .panel-heading   { @include panel-heading-styles($panel-success-heading-bg); }
-.panel-info > .panel-heading      { @include panel-heading-styles($panel-info-heading-bg); }
-.panel-warning > .panel-heading   { @include panel-heading-styles($panel-warning-heading-bg); }
-.panel-danger > .panel-heading    { @include panel-heading-styles($panel-danger-heading-bg); }
-
-
-//
-// Wells
-// --------------------------------------------------
-
-.well {
-  @include gradient-vertical($start-color: darken($well-bg, 5%), $end-color: $well-bg);
-  border-color: darken($well-bg, 10%);
-  $shadow: inset 0 1px 3px rgba(0,0,0,.05), 0 1px 0 rgba(255,255,255,.1);
-  @include box-shadow($shadow);
-}
diff --git a/assets/stylesheets/bootstrap/_thumbnails.scss b/assets/stylesheets/bootstrap/_thumbnails.scss
deleted file mode 100644
index da0e1e7..0000000
--- a/assets/stylesheets/bootstrap/_thumbnails.scss
+++ /dev/null
@@ -1,38 +0,0 @@
-//
-// Thumbnails
-// --------------------------------------------------
-
-
-// Mixin and adjust the regular image class
-.thumbnail {
-  display: block;
-  padding: $thumbnail-padding;
-  margin-bottom: $line-height-computed;
-  line-height: $line-height-base;
-  background-color: $thumbnail-bg;
-  border: 1px solid $thumbnail-border;
-  border-radius: $thumbnail-border-radius;
-  @include transition(border .2s ease-in-out);
-
-  > img,
-  a > img {
-    @include img-responsive;
-    margin-left: auto;
-    margin-right: auto;
-  }
-
-  // [converter] extracted a&:hover, a&:focus, a&.active to a.thumbnail:hover, a.thumbnail:focus, a.thumbnail.active
-
-  // Image captions
-  .caption {
-    padding: $thumbnail-caption-padding;
-    color: $thumbnail-caption-color;
-  }
-}
-
-// Add a hover state for linked versions only
-a.thumbnail:hover,
-a.thumbnail:focus,
-a.thumbnail.active {
-  border-color: $link-color;
-}
diff --git a/assets/stylesheets/bootstrap/_tooltip.scss b/assets/stylesheets/bootstrap/_tooltip.scss
index f0c1658..941579e 100644
--- a/assets/stylesheets/bootstrap/_tooltip.scss
+++ b/assets/stylesheets/bootstrap/_tooltip.scss
@@ -1,8 +1,3 @@
-//
-// Tooltips
-// --------------------------------------------------
-
-
 // Base class
 .tooltip {
   position: absolute;
@@ -10,16 +5,64 @@
   display: block;
   // Our parent element can be arbitrary since tooltips are by default inserted as a sibling of their target element.
   // So reset our font and text properties to avoid inheriting weird values.
-  @include reset-text;
-  font-size: $font-size-small;
+  @include reset-text();
+  font-size: $font-size-sm;
+  opacity: 0;
+
+  &.in { opacity: $tooltip-opacity; }
+
+  &.tooltip-top,
+  &.bs-tether-element-attached-bottom {
+    padding: $tooltip-arrow-width 0;
+    margin-top: -3px;
+
+    .tooltip-arrow {
+      bottom: 0;
+      left: 50%;
+      margin-left: -$tooltip-arrow-width;
+      border-width: $tooltip-arrow-width $tooltip-arrow-width 0;
+      border-top-color: $tooltip-arrow-color;
+    }
+  }
+  &.tooltip-right,
+  &.bs-tether-element-attached-left {
+    padding: 0 $tooltip-arrow-width;
+    margin-left: 3px;
 
-  @include opacity(0);
+    .tooltip-arrow {
+      top: 50%;
+      left: 0;
+      margin-top: -$tooltip-arrow-width;
+      border-width: $tooltip-arrow-width $tooltip-arrow-width $tooltip-arrow-width 0;
+      border-right-color: $tooltip-arrow-color;
+    }
+  }
+  &.tooltip-bottom,
+  &.bs-tether-element-attached-top {
+    padding: $tooltip-arrow-width 0;
+    margin-top: 3px;
 
-  &.in     { @include opacity($tooltip-opacity); }
-  &.top    { margin-top:  -3px; padding: $tooltip-arrow-width 0; }
-  &.right  { margin-left:  3px; padding: 0 $tooltip-arrow-width; }
-  &.bottom { margin-top:   3px; padding: $tooltip-arrow-width 0; }
-  &.left   { margin-left: -3px; padding: 0 $tooltip-arrow-width; }
+    .tooltip-arrow {
+      top: 0;
+      left: 50%;
+      margin-left: -$tooltip-arrow-width;
+      border-width: 0 $tooltip-arrow-width $tooltip-arrow-width;
+      border-bottom-color: $tooltip-arrow-color;
+    }
+  }
+  &.tooltip-left,
+  &.bs-tether-element-attached-right {
+    padding: 0 $tooltip-arrow-width;
+    margin-left: -3px;
+
+    .tooltip-arrow {
+      top: 50%;
+      right: 0;
+      margin-top: -$tooltip-arrow-width;
+      border-width: $tooltip-arrow-width 0 $tooltip-arrow-width $tooltip-arrow-width;
+      border-left-color: $tooltip-arrow-color;
+    }
+  }
 }
 
 // Wrapper for the tooltip content
@@ -29,7 +72,7 @@
   color: $tooltip-color;
   text-align: center;
   background-color: $tooltip-bg;
-  border-radius: $border-radius-base;
+  @include border-radius($border-radius);
 }
 
 // Arrows
@@ -40,62 +83,3 @@
   border-color: transparent;
   border-style: solid;
 }
-// Note: Deprecated .top-left, .top-right, .bottom-left, and .bottom-right as of v3.3.1
-.tooltip {
-  &.top .tooltip-arrow {
-    bottom: 0;
-    left: 50%;
-    margin-left: -$tooltip-arrow-width;
-    border-width: $tooltip-arrow-width $tooltip-arrow-width 0;
-    border-top-color: $tooltip-arrow-color;
-  }
-  &.top-left .tooltip-arrow {
-    bottom: 0;
-    right: $tooltip-arrow-width;
-    margin-bottom: -$tooltip-arrow-width;
-    border-width: $tooltip-arrow-width $tooltip-arrow-width 0;
-    border-top-color: $tooltip-arrow-color;
-  }
-  &.top-right .tooltip-arrow {
-    bottom: 0;
-    left: $tooltip-arrow-width;
-    margin-bottom: -$tooltip-arrow-width;
-    border-width: $tooltip-arrow-width $tooltip-arrow-width 0;
-    border-top-color: $tooltip-arrow-color;
-  }
-  &.right .tooltip-arrow {
-    top: 50%;
-    left: 0;
-    margin-top: -$tooltip-arrow-width;
-    border-width: $tooltip-arrow-width $tooltip-arrow-width $tooltip-arrow-width 0;
-    border-right-color: $tooltip-arrow-color;
-  }
-  &.left .tooltip-arrow {
-    top: 50%;
-    right: 0;
-    margin-top: -$tooltip-arrow-width;
-    border-width: $tooltip-arrow-width 0 $tooltip-arrow-width $tooltip-arrow-width;
-    border-left-color: $tooltip-arrow-color;
-  }
-  &.bottom .tooltip-arrow {
-    top: 0;
-    left: 50%;
-    margin-left: -$tooltip-arrow-width;
-    border-width: 0 $tooltip-arrow-width $tooltip-arrow-width;
-    border-bottom-color: $tooltip-arrow-color;
-  }
-  &.bottom-left .tooltip-arrow {
-    top: 0;
-    right: $tooltip-arrow-width;
-    margin-top: -$tooltip-arrow-width;
-    border-width: 0 $tooltip-arrow-width $tooltip-arrow-width;
-    border-bottom-color: $tooltip-arrow-color;
-  }
-  &.bottom-right .tooltip-arrow {
-    top: 0;
-    left: $tooltip-arrow-width;
-    margin-top: -$tooltip-arrow-width;
-    border-width: 0 $tooltip-arrow-width $tooltip-arrow-width;
-    border-bottom-color: $tooltip-arrow-color;
-  }
-}
diff --git a/assets/stylesheets/bootstrap/_type.scss b/assets/stylesheets/bootstrap/_type.scss
index a39a615..2f5cdb4 100644
--- a/assets/stylesheets/bootstrap/_type.scss
+++ b/assets/stylesheets/bootstrap/_type.scss
@@ -1,10 +1,6 @@
 //
-// Typography
-// --------------------------------------------------
-
-
 // Headings
-// -------------------------
+//
 
 h1, h2, h3, h4, h5, h6,
 .h1, .h2, .h3, .h4, .h5, .h6 {
@@ -12,36 +8,17 @@ h1, h2, h3, h4, h5, h6,
   font-weight: $headings-font-weight;
   line-height: $headings-line-height;
   color: $headings-color;
-
-  small,
-  .small {
-    font-weight: normal;
-    line-height: 1;
-    color: $headings-small-color;
-  }
 }
 
 h1, .h1,
 h2, .h2,
 h3, .h3 {
-  margin-top: $line-height-computed;
-  margin-bottom: ($line-height-computed / 2);
-
-  small,
-  .small {
-    font-size: 65%;
-  }
+  margin-bottom: $headings-margin-bottom;
 }
 h4, .h4,
 h5, .h5,
 h6, .h6 {
-  margin-top: ($line-height-computed / 2);
-  margin-bottom: ($line-height-computed / 2);
-
-  small,
-  .small {
-    font-size: 75%;
-  }
+  margin-bottom: $headings-margin-bottom;
 }
 
 h1, .h1 { font-size: $font-size-h1; }
@@ -51,198 +28,106 @@ h4, .h4 { font-size: $font-size-h4; }
 h5, .h5 { font-size: $font-size-h5; }
 h6, .h6 { font-size: $font-size-h6; }
 
+.lead {
+  font-size: $lead-font-size;
+  font-weight: $lead-font-weight;
+}
 
-// Body text
-// -------------------------
-
-p {
-  margin: 0 0 ($line-height-computed / 2);
+// Type display classes
+.display-1 {
+  font-size: $display1-size;
+  font-weight: $display1-weight;
+}
+.display-2 {
+  font-size: $display2-size;
+  font-weight: $display2-weight;
+}
+.display-3 {
+  font-size: $display3-size;
+  font-weight: $display3-weight;
+}
+.display-4 {
+  font-size: $display4-size;
+  font-weight: $display4-weight;
 }
 
-.lead {
-  margin-bottom: $line-height-computed;
-  font-size: floor(($font-size-base * 1.15));
-  font-weight: 300;
-  line-height: 1.4;
 
-  @media (min-width: $screen-sm-min) {
-    font-size: ($font-size-base * 1.5);
-  }
+//
+// Horizontal rules
+//
+
+hr {
+  margin-top: $spacer-y;
+  margin-bottom: $spacer-y;
+  border: 0;
+  border-top: $hr-border-width solid $hr-border-color;
 }
 
 
-// Emphasis & misc
-// -------------------------
+//
+// Emphasis
+//
 
-// Ex: (12px small font / 14px base font) * 100% = about 85%
 small,
 .small {
-  font-size: floor((100% * $font-size-small / $font-size-base));
+  font-size: 80%;
+  font-weight: normal;
 }
 
 mark,
 .mark {
-  background-color: $state-warning-bg;
   padding: .2em;
-}
-
-// Alignment
-.text-left           { text-align: left; }
-.text-right          { text-align: right; }
-.text-center         { text-align: center; }
-.text-justify        { text-align: justify; }
-.text-nowrap         { white-space: nowrap; }
-
-// Transformation
-.text-lowercase      { text-transform: lowercase; }
-.text-uppercase      { text-transform: uppercase; }
-.text-capitalize     { text-transform: capitalize; }
-
-// Contextual colors
-.text-muted {
-  color: $text-muted;
-}
-
-@include text-emphasis-variant('.text-primary', $brand-primary);
-
-@include text-emphasis-variant('.text-success', $state-success-text);
-
-@include text-emphasis-variant('.text-info', $state-info-text);
-
-@include text-emphasis-variant('.text-warning', $state-warning-text);
-
-@include text-emphasis-variant('.text-danger', $state-danger-text);
-
-// Contextual backgrounds
-// For now we'll leave these alongside the text classes until v4 when we can
-// safely shift things around (per SemVer rules).
-.bg-primary {
-  // Given the contrast here, this is the only class to have its color inverted
-  // automatically.
-  color: #fff;
-}
-@include bg-variant('.bg-primary', $brand-primary);
-
-@include bg-variant('.bg-success', $state-success-bg);
-
-@include bg-variant('.bg-info', $state-info-bg);
-
-@include bg-variant('.bg-warning', $state-warning-bg);
-
-@include bg-variant('.bg-danger', $state-danger-bg);
-
-
-// Page header
-// -------------------------
-
-.page-header {
-  padding-bottom: (($line-height-computed / 2) - 1);
-  margin: ($line-height-computed * 2) 0 $line-height-computed;
-  border-bottom: 1px solid $page-header-border-color;
+  background-color: $state-warning-bg;
 }
 
 
+//
 // Lists
-// -------------------------
-
-// Unordered and Ordered lists
-ul,
-ol {
-  margin-top: 0;
-  margin-bottom: ($line-height-computed / 2);
-  ul,
-  ol {
-    margin-bottom: 0;
-  }
-}
-
-// List options
+//
 
-// [converter] extracted from `.list-unstyled` for libsass compatibility
-@mixin list-unstyled {
+// Unstyled keeps list items block level, just removes default browser padding and list-style
+.list-unstyled {
   padding-left: 0;
   list-style: none;
 }
-// [converter] extracted as `@mixin list-unstyled` for libsass compatibility
-.list-unstyled {
-  @include list-unstyled;
-}
-
 
 // Inline turns list items into inline-block
 .list-inline {
-  @include list-unstyled;
+  padding-left: 0;
   margin-left: -5px;
+  list-style: none;
 
   > li {
     display: inline-block;
-    padding-left: 5px;
     padding-right: 5px;
+    padding-left: 5px;
   }
 }
 
-// Description Lists
-dl {
-  margin-top: 0; // Remove browser default
-  margin-bottom: $line-height-computed;
-}
-dt,
-dd {
-  line-height: $line-height-base;
-}
-dt {
-  font-weight: bold;
-}
-dd {
-  margin-left: 0; // Undo browser default
-}
-
-// Horizontal description lists
-//
-// Defaults to being stacked without any of the below styles applied, until the
-// grid breakpoint is reached (default of ~768px).
-
+// Horizontal description lists w/ grid classes
 .dl-horizontal {
-  dd {
-    @include clearfix; // Clear the floated `dt` if an empty `dd` is present
-  }
-
-  @media (min-width: $grid-float-breakpoint) {
-    dt {
-      float: left;
-      width: ($dl-horizontal-offset - 20);
-      clear: left;
-      text-align: right;
-      @include text-overflow;
-    }
-    dd {
-      margin-left: $dl-horizontal-offset;
-    }
-  }
+  margin-right: -$grid-gutter-width;
+  margin-left: -$grid-gutter-width;
+  @include clearfix;
 }
 
 
+//
 // Misc
-// -------------------------
+//
 
-// Abbreviations and acronyms
-abbr[title],
-// Add data-* attribute to help out our tooltip plugin, per https://github.com/twbs/bootstrap/issues/5257
-abbr[data-original-title] {
-  cursor: help;
-  border-bottom: 1px dotted $abbr-border-color;
-}
+// Builds on `abbr`
 .initialism {
   font-size: 90%;
-  @extend .text-uppercase;
+  text-transform: uppercase;
 }
 
 // Blockquotes
-blockquote {
-  padding: ($line-height-computed / 2) $line-height-computed;
-  margin: 0 0 $line-height-computed;
+.blockquote {
+  padding: ($spacer / 2) $spacer;
+  margin-bottom: $spacer;
   font-size: $blockquote-font-size;
-  border-left: 5px solid $blockquote-border-color;
+  border-left: .25rem solid $blockquote-border-color;
 
   p,
   ul,
@@ -252,47 +137,51 @@ blockquote {
     }
   }
 
-  // Note: Deprecated small and .small as of v3.1.0
-  // Context: https://github.com/twbs/bootstrap/issues/11660
-  footer,
-  small,
-  .small {
+  footer {
     display: block;
     font-size: 80%; // back to default font-size
-    line-height: $line-height-base;
+    line-height: $line-height;
     color: $blockquote-small-color;
 
     &:before {
-      content: '\2014 \00A0'; // em dash, nbsp
+      content: "\2014 \00A0"; // em dash, nbsp
     }
   }
 }
 
 // Opposite alignment of blockquote
-//
-// Heads up: `blockquote.pull-right` has been deprecated as of v3.1.0.
-.blockquote-reverse,
-blockquote.pull-right {
-  padding-right: 15px;
+.blockquote-reverse {
+  padding-right: $spacer;
   padding-left: 0;
-  border-right: 5px solid $blockquote-border-color;
-  border-left: 0;
   text-align: right;
+  border-right: .25rem solid $blockquote-border-color;
+  border-left: 0;
 
   // Account for citation
-  footer,
-  small,
-  .small {
-    &:before { content: ''; }
+  footer {
+    &:before { content: ""; }
     &:after {
-      content: '\00A0 \2014'; // nbsp, em dash
+      content: "\00A0 \2014"; // nbsp, em dash
     }
   }
 }
 
-// Addresses
-address {
-  margin-bottom: $line-height-computed;
-  font-style: normal;
-  line-height: $line-height-base;
+//
+// Figures
+//
+
+.figure {
+  // Ensures the caption's text aligns with the image.
+  display: inline-block;
+
+  > img {
+    @extend .img-responsive;
+    line-height: 1;
+    margin-bottom: ($spacer-y / 2);
+  }
+}
+
+.figure-caption {
+  font-size: 90%;
+  color: $gray-light;
 }
diff --git a/assets/stylesheets/bootstrap/_utilities-responsive.scss b/assets/stylesheets/bootstrap/_utilities-responsive.scss
new file mode 100644
index 0000000..c69ecc9
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_utilities-responsive.scss
@@ -0,0 +1,49 @@
+//
+// Mixins
+//
+
+@each $bp in map-keys($grid-breakpoints) {
+  .hidden-#{$bp}-up {
+    @include media-breakpoint-up($bp) {
+      display: none !important;
+    }
+  }
+  .hidden-#{$bp}-down {
+    @include media-breakpoint-down($bp) {
+      display: none !important;
+    }
+  }
+}
+
+
+// Print utilities
+//
+// Media queries are placed on the inside to be mixin-friendly.
+
+.visible-print-block {
+  display: none !important;
+
+  @media print {
+    display: block !important;
+  }
+}
+.visible-print-inline {
+  display: none !important;
+
+  @media print {
+    display: inline !important;
+  }
+}
+.visible-print-inline-block {
+  display: none !important;
+
+  @media print {
+    display: inline-block !important;
+  }
+}
+
+.hidden-print {
+  @media print {
+    @include responsive-invisibility(".hidden-print");
+  }
+}
diff --git a/assets/stylesheets/bootstrap/_utilities-spacing.scss b/assets/stylesheets/bootstrap/_utilities-spacing.scss
new file mode 100644
index 0000000..547bea7
--- /dev/null
+++ b/assets/stylesheets/bootstrap/_utilities-spacing.scss
@@ -0,0 +1,78 @@
+// Margin
+
+.m-a-0 { margin:        0 !important; }
+.m-t-0 { margin-top:    0 !important; }
+.m-r-0 { margin-right:  0 !important; }
+.m-b-0 { margin-bottom: 0 !important; }
+.m-l-0 { margin-left:   0 !important; }
+.m-x-0 { margin-right:  0 !important; margin-left:   0 !important; }
+.m-y-0 { margin-top:    0 !important; margin-bottom: 0 !important; }
+
+.m-a { margin:        $spacer !important; }
+.m-t { margin-top:    $spacer-y !important; }
+.m-r { margin-right:  $spacer-x !important; }
+.m-b { margin-bottom: $spacer-y !important; }
+.m-l { margin-left:   $spacer-x !important; }
+.m-x { margin-right:  $spacer-x !important; margin-left: $spacer-x !important; }
+.m-y { margin-top:    $spacer-y !important; margin-bottom: $spacer-y !important; }
+.m-x-auto { margin-right: auto !important; margin-left: auto !important; }
+
+.m-a-md { margin:        ($spacer * 1.5) !important; }
+.m-t-md { margin-top:    ($spacer-y * 1.5) !important; }
+.m-r-md { margin-right:  ($spacer-y * 1.5) !important; }
+.m-b-md { margin-bottom: ($spacer-y * 1.5) !important; }
+.m-l-md { margin-left:   ($spacer-y * 1.5) !important; }
+.m-x-md { margin-right:  ($spacer-x * 1.5) !important; margin-left:   ($spacer-x * 1.5) !important; }
+.m-y-md { margin-top:    ($spacer-y * 1.5) !important; margin-bottom: ($spacer-y * 1.5) !important; }
+
+.m-a-lg { margin:        ($spacer * 3) !important; }
+.m-t-lg { margin-top:    ($spacer-y * 3) !important; }
+.m-r-lg { margin-right:  ($spacer-y * 3) !important; }
+.m-b-lg { margin-bottom: ($spacer-y * 3) !important; }
+.m-l-lg { margin-left:   ($spacer-y * 3) !important; }
+.m-x-lg { margin-right:  ($spacer-x * 3) !important; margin-left:   ($spacer-x * 3) !important; }
+.m-y-lg { margin-top:    ($spacer-y * 3) !important; margin-bottom: ($spacer-y * 3) !important; }
+
+// Padding
+
+.p-a-0 { padding:        0 !important; }
+.p-t-0 { padding-top:    0 !important; }
+.p-r-0 { padding-right:  0 !important; }
+.p-b-0 { padding-bottom: 0 !important; }
+.p-l-0 { padding-left:   0 !important; }
+.p-x-0 { padding-left:   0 !important; padding-right: 0 !important; }
+.p-y-0 { padding-top:    0 !important; padding-bottom: 0 !important; }
+
+.p-a { padding:        $spacer !important; }
+.p-t { padding-top:    $spacer-y !important; }
+.p-r { padding-right:  $spacer-x !important; }
+.p-b { padding-bottom: $spacer-y !important; }
+.p-l { padding-left:   $spacer-x !important; }
+.p-x { padding-right:  $spacer-x !important; padding-left:   $spacer-x !important; }
+.p-y { padding-top:    $spacer-y !important; padding-bottom: $spacer-y !important; }
+
+.p-a-md { padding:        ($spacer * 1.5) !important; }
+.p-t-md { padding-top:    ($spacer-y * 1.5) !important; }
+.p-r-md { padding-right:  ($spacer-y * 1.5) !important; }
+.p-b-md { padding-bottom: ($spacer-y * 1.5) !important; }
+.p-l-md { padding-left:   ($spacer-y * 1.5) !important; }
+.p-x-md { padding-right:  ($spacer-x * 1.5) !important; padding-left:   ($spacer-x * 1.5) !important; }
+.p-y-md { padding-top:    ($spacer-y * 1.5) !important; padding-bottom: ($spacer-y * 1.5) !important; }
+
+.p-a-lg { padding:        ($spacer * 3) !important; }
+.p-t-lg { padding-top:    ($spacer-y * 3) !important; }
+.p-r-lg { padding-right:  ($spacer-y * 3) !important; }
+.p-b-lg { padding-bottom: ($spacer-y * 3) !important; }
+.p-l-lg { padding-left:   ($spacer-y * 3) !important; }
+.p-x-lg { padding-right:  ($spacer-x * 3) !important; padding-left:   ($spacer-x * 3) !important; }
+.p-y-lg { padding-top:    ($spacer-y * 3) !important; padding-bottom: ($spacer-y * 3) !important; }
+
+// Positioning
+
+.pos-f-t {
+  position: fixed;
+  top: 0;
+  right: 0;
+  left: 0;
+  z-index: $zindex-navbar-fixed;
+}
diff --git a/assets/stylesheets/bootstrap/_utilities.scss b/assets/stylesheets/bootstrap/_utilities.scss
index 8c99c71..12e2962 100644
--- a/assets/stylesheets/bootstrap/_utilities.scss
+++ b/assets/stylesheets/bootstrap/_utilities.scss
@@ -1,55 +1,137 @@
 //
-// Utility classes
-// --------------------------------------------------
-
-
 // Floats
-// -------------------------
+//
 
 .clearfix {
-  @include clearfix;
+  @include clearfix();
 }
+
 .center-block {
-  @include center-block;
+  @include center-block();
 }
+
 .pull-right {
-  float: right !important;
+  @include pull-right();
 }
+
 .pull-left {
-  float: left !important;
+  @include pull-left();
 }
 
 
-// Toggling content
-// -------------------------
+//
+// Screenreaders
+//
 
-// Note: Deprecated .hide in favor of .hidden or .sr-only (as appropriate) in v3.0.1
-.hide {
-  display: none !important;
+.sr-only {
+  @include sr-only();
+}
+
+.sr-only-focusable {
+  @include sr-only-focusable();
 }
-.show {
-  display: block !important;
+
+// Always hide an element with the `hidden` HTML attribute (from PureCSS).
+[hidden] {
+  display: none !important;
 }
+
 .invisible {
   visibility: hidden;
 }
+
 .text-hide {
-  @include text-hide;
+  @include text-hide();
 }
 
 
-// Hide from screenreaders and browsers
 //
-// Credit: HTML5 Boilerplate
+// Text
+//
 
-.hidden {
-  display: none !important;
+// Alignment
+
+.text-left           { text-align: left; }
+.text-right          { text-align: right; }
+.text-center         { text-align: center; }
+.text-justify        { text-align: justify; }
+.text-nowrap         { white-space: nowrap; }
+.text-truncate       { @include text-truncate; }
+
+// Responsive alignment
+
+.text-xs-left   { text-align: left; }
+.text-xs-right  { text-align: right; }
+.text-xs-center { text-align: center; }
+
+@include media-breakpoint-up(sm) {
+  .text-sm-left   { text-align: left; }
+  .text-sm-right  { text-align: right; }
+  .text-sm-center { text-align: center; }
+}
+
+@include media-breakpoint-up(md) {
+  .text-md-left   { text-align: left; }
+  .text-md-right  { text-align: right; }
+  .text-md-center { text-align: center; }
+}
+
+@include media-breakpoint-up(lg) {
+  .text-lg-left   { text-align: left; }
+  .text-lg-right  { text-align: right; }
+  .text-lg-center { text-align: center; }
 }
 
+@include media-breakpoint-up(xl) {
+  .text-xl-left   { text-align: left; }
+  .text-xl-right  { text-align: right; }
+  .text-xl-center { text-align: center; }
+}
+
+// Transformation
+
+.text-lowercase      { text-transform: lowercase; }
+.text-uppercase      { text-transform: uppercase; }
+.text-capitalize     { text-transform: capitalize; }
+
+// Contextual colors
+
+.text-muted {
+  color: $text-muted;
+}
+
+@include text-emphasis-variant('.text-primary', $brand-primary);
+
+@include text-emphasis-variant('.text-success', $brand-success);
 
-// For Affix plugin
-// -------------------------
+@include text-emphasis-variant('.text-info', $brand-info);
 
-.affix {
-  position: fixed;
+@include text-emphasis-variant('.text-warning', $brand-warning);
+
+@include text-emphasis-variant('.text-danger', $brand-danger);
+
+
+// Contextual backgrounds
+// For now we'll leave these alongside the text classes until v4 when we can
+// safely shift things around (per SemVer rules).
+
+// Inverse
+// Todo: redo this as a proper class
+.bg-inverse {
+  color: $gray-lighter;
+  background-color: $gray-dark;
+}
+
+.bg-faded {
+  background-color: $gray-lightest;
 }
+
+@include bg-variant('.bg-primary', $brand-primary);
+
+@include bg-variant('.bg-success', $brand-success);
+
+@include bg-variant('.bg-info', $brand-info);
+
+@include bg-variant('.bg-warning', $brand-warning);
+
+@include bg-variant('.bg-danger', $brand-danger);
diff --git a/assets/stylesheets/bootstrap/_variables.scss b/assets/stylesheets/bootstrap/_variables.scss
index bf9373b..b655a3f 100644
--- a/assets/stylesheets/bootstrap/_variables.scss
+++ b/assets/stylesheets/bootstrap/_variables.scss
@@ -1,273 +1,324 @@
-$bootstrap-sass-asset-helper: false !default;
-//
 // Variables
-// --------------------------------------------------
+//
+// Copy settings from this file into the provided `_custom.scss` to override
+// the Bootstrap defaults without modifying key, versioned files.
+
+
+// Table of ontents
+//
+// Colors
+// Options
+// Spacing
+// Body
+// Links
+// Grid breakpoints
+// Grid containers
+// Grid columns
+// Fonts
+// Components
+
+// General variable structure
+//
+// Variable format should follow the `$component-modifier-state-property` order.
 
 
-//== Colors
+// Colors
 //
-//## Gray and brand colors for use across Bootstrap.
+// Grayscale and brand colors for use across Bootstrap.
 
-$gray-base:              #000 !default;
-$gray-darker:            lighten($gray-base, 13.5%) !default; // #222
-$gray-dark:              lighten($gray-base, 20%) !default;   // #333
-$gray:                   lighten($gray-base, 33.5%) !default; // #555
-$gray-light:             lighten($gray-base, 46.7%) !default; // #777
-$gray-lighter:           lighten($gray-base, 93.5%) !default; // #eee
+$gray-dark:                 #373a3c !default;
+$gray:                      #55595c !default;
+$gray-light:                #818a91 !default;
+$gray-lighter:              #eceeef !default;
+$gray-lightest:             #f7f7f9 !default;
 
-$brand-primary:         darken(#428bca, 6.5%) !default; // #337ab7
-$brand-success:         #5cb85c !default;
-$brand-info:            #5bc0de !default;
-$brand-warning:         #f0ad4e !default;
-$brand-danger:          #d9534f !default;
+$brand-primary:             #0275d8 !default;
+$brand-success:             #5cb85c !default;
+$brand-info:                #5bc0de !default;
+$brand-warning:             #f0ad4e !default;
+$brand-danger:              #d9534f !default;
 
 
-//== Scaffolding
+// Options
 //
-//## Settings for some of the most global styles.
+// Quickly modify global styling by enabling or disabling optional features.
 
-//** Background color for `<body>`.
-$body-bg:               #fff !default;
-//** Global text color on `<body>`.
-$text-color:            $gray-dark !default;
+$enable-flex:               false !default;
+$enable-rounded:            true !default;
+$enable-shadows:            false !default;
+$enable-gradients:          false !default;
+$enable-transitions:        false !default;
+$enable-hover-media-query:  false !default;
 
-//** Global textual link color.
-$link-color:            $brand-primary !default;
-//** Link hover color set via `darken()` function.
-$link-hover-color:      darken($link-color, 15%) !default;
-//** Link hover decoration.
-$link-hover-decoration: underline !default;
 
+// Spacing
+//
+// Control the default styling of most Bootstrap elements by modifying these
+// variables. Mostly focused on spacing.
+
+$spacer:                     1rem !default;
+$spacer-x:                   $spacer !default;
+$spacer-y:                   $spacer !default;
+$border-width:               .0625rem !default;
 
-//== Typography
+
+// Body
 //
-//## Font, line-height, and color for body text, headings, and more.
-
-$font-family-sans-serif:  "Helvetica Neue", Helvetica, Arial, sans-serif !default;
-$font-family-serif:       Georgia, "Times New Roman", Times, serif !default;
-//** Default monospace fonts for `<code>`, `<kbd>`, and `<pre>`.
-$font-family-monospace:   Menlo, Monaco, Consolas, "Courier New", monospace !default;
-$font-family-base:        $font-family-sans-serif !default;
-
-$font-size-base:          14px !default;
-$font-size-large:         ceil(($font-size-base * 1.25)) !default; // ~18px
-$font-size-small:         ceil(($font-size-base * 0.85)) !default; // ~12px
-
-$font-size-h1:            floor(($font-size-base * 2.6)) !default; // ~36px
-$font-size-h2:            floor(($font-size-base * 2.15)) !default; // ~30px
-$font-size-h3:            ceil(($font-size-base * 1.7)) !default; // ~24px
-$font-size-h4:            ceil(($font-size-base * 1.25)) !default; // ~18px
-$font-size-h5:            $font-size-base !default;
-$font-size-h6:            ceil(($font-size-base * 0.85)) !default; // ~12px
-
-//** Unit-less `line-height` for use in components like buttons.
-$line-height-base:        1.428571429 !default; // 20/14
-//** Computed "line-height" (`font-size` * `line-height`) for use with `margin`, `padding`, etc.
-$line-height-computed:    floor(($font-size-base * $line-height-base)) !default; // ~20px
-
-//** By default, this inherits from the `<body>`.
-$headings-font-family:    inherit !default;
-$headings-font-weight:    500 !default;
-$headings-line-height:    1.1 !default;
-$headings-color:          inherit !default;
-
-
-//== Iconography
+// Settings for the `<body>` element.
+
+$body-bg:                    #fff !default;
+$body-color:                 $gray-dark !default;
+
+
+// Links
 //
-//## Specify custom location and filename of the included Glyphicons icon font. Useful for those including Bootstrap via Bower.
+// Style anchor elements.
 
-//** Load fonts from this directory.
+$link-color:                 $brand-primary !default;
+$link-hover-color:           darken($link-color, 15%) !default;
+$link-hover-decoration:      underline !default;
 
-// [converter] If $bootstrap-sass-asset-helper if used, provide path relative to the assets load path.
-// [converter] This is because some asset helpers, such as Sprockets, do not work with file-relative paths.
-$icon-font-path: if($bootstrap-sass-asset-helper, "bootstrap/", "../fonts/bootstrap/") !default;
 
-//** File name for all font files.
-$icon-font-name:          "glyphicons-halflings-regular" !default;
-//** Element ID within SVG icon file.
-$icon-font-svg-id:        "glyphicons_halflingsregular" !default;
+// Grid breakpoints
+//
+// Define the minimum and maximum dimensions at which your layout will change,
+// adapting to different screen sizes, for use in media queries.
 
+$grid-breakpoints: (
+  // Extra small screen / phone
+  xs: 0,
+  // Small screen / phone
+  sm: 34em,
+  // Medium screen / tablet
+  md: 48em,
+  // Large screen / desktop
+  lg: 62em,
+  // Extra large screen / wide desktop
+  xl: 75em
+) !default;
 
-//== Components
+
+// Grid containers
 //
-//## Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
+// Define the maximum width of `.container` for different screen sizes.
+
+$container-max-widths: (
+  sm: 34rem,    // 480
+  md: 45rem,    // 720
+  lg: 60rem,    // 960
+  xl: 72.25rem  // 1140
+) !default;
 
-$padding-base-vertical:     6px !default;
-$padding-base-horizontal:   12px !default;
 
-$padding-large-vertical:    10px !default;
-$padding-large-horizontal:  16px !default;
+// Grid columns
+//
+// Set the number of columns and specify the width of the gutters.
+
+$grid-columns:               12 !default;
+$grid-gutter-width:          1.875rem !default; // 30px
+
+
+// Typography
+//
+// Font, line-height, and color for body text, headings, and more.
 
-$padding-small-vertical:    5px !default;
-$padding-small-horizontal:  10px !default;
+$font-family-sans-serif:     "Helvetica Neue", Helvetica, Arial, sans-serif !default;
+$font-family-serif:          Georgia, "Times New Roman", Times, serif !default;
+$font-family-monospace:      Menlo, Monaco, Consolas, "Courier New", monospace !default;
+$font-family-base:           $font-family-sans-serif !default;
 
-$padding-xs-vertical:       1px !default;
-$padding-xs-horizontal:     5px !default;
+// Pixel value used to responsively scale all typography. Applied to the `<html>` element.
+$font-size-root:             16px !default;
 
-$line-height-large:         1.3333333 !default; // extra decimals for Win 8.1 Chrome
-$line-height-small:         1.5 !default;
+$font-size-base:             1rem !default;
+$font-size-lg:               1.25rem !default;
+$font-size-sm:               .85rem !default;
+$font-size-xs:               .75rem !default;
 
-$border-radius-base:        4px !default;
-$border-radius-large:       6px !default;
-$border-radius-small:       3px !default;
+$font-size-h1:               2.5rem !default;
+$font-size-h2:               2rem !default;
+$font-size-h3:               1.75rem !default;
+$font-size-h4:               1.5rem !default;
+$font-size-h5:               1.25rem !default;
+$font-size-h6:               1rem !default;
 
-//** Global color for active items (e.g., navs or dropdowns).
-$component-active-color:    #fff !default;
-//** Global background color for active items (e.g., navs or dropdowns).
-$component-active-bg:       $brand-primary !default;
+$display1-size:               3.5rem !default;
+$display2-size:               4.5rem !default;
+$display3-size:               5.5rem !default;
+$display4-size:               6rem !default;
 
-//** Width of the `border` for generating carets that indicator dropdowns.
-$caret-width-base:          4px !default;
-//** Carets increase slightly in size for larger components.
-$caret-width-large:         5px !default;
+$display1-weight:             300 !default;
+$display2-weight:             300 !default;
+$display3-weight:             300 !default;
+$display4-weight:             300 !default;
 
+$line-height:                1.5 !default;
+
+$headings-margin-bottom:     ($spacer / 2) !default;
+$headings-font-family:       inherit !default;
+$headings-font-weight:       500 !default;
+$headings-line-height:       1.1 !default;
+$headings-color:             inherit !default;
+
+$lead-font-size:             1.25rem !default;
+$lead-font-weight:           300 !default;
+
+$text-muted:                  $gray-light !default;
+
+$abbr-border-color:           $gray-light !default;
 
-//== Tables
+$blockquote-small-color:      $gray-light !default;
+$blockquote-font-size:        ($font-size-base * 1.25) !default;
+$blockquote-border-color:     $gray-lighter !default;
+
+$hr-border-color:             rgba(0,0,0,.1) !default;
+$hr-border-width:             $border-width;
+
+
+// Components
+//
+// Define common padding and border radius sizes and more. Values based on 14px text and 1.428 line-height (~20px to start).
+
+$line-height-lg:         (4/3) !default;
+$line-height-sm:         1.5 !default;
+
+$border-radius:          .25rem !default;
+$border-radius-lg:       .3rem !default;
+$border-radius-sm:       .2rem !default;
+
+$component-active-color: #fff !default;
+$component-active-bg:    $brand-primary !default;
+
+$caret-width:            .3em !default;
+$caret-width-lg:         $caret-width !default;
+
+
+// Tables
 //
-//## Customizes the `.table` component with basic values, each used across all table variations.
+// Customizes the `.table` component with basic values, each used across all table variations.
 
-//** Padding for `<th>`s and `<td>`s.
-$table-cell-padding:            8px !default;
-//** Padding for cells in `.table-condensed`.
-$table-condensed-cell-padding:  5px !default;
+$table-cell-padding:            .75rem !default;
+$table-sm-cell-padding:         .3rem !default;
 
-//** Default background color used for all tables.
 $table-bg:                      transparent !default;
-//** Background color used for `.table-striped`.
 $table-bg-accent:               #f9f9f9 !default;
-//** Background color used for `.table-hover`.
 $table-bg-hover:                #f5f5f5 !default;
 $table-bg-active:               $table-bg-hover !default;
 
-//** Border color for table and cell borders.
-$table-border-color:            #ddd !default;
+$table-border-color:            $gray-lighter !default;
 
 
-//== Buttons
+// Buttons
 //
-//## For each of Bootstrap's buttons, define text, background and border color.
+// For each of Bootstrap's buttons, define text, background and border color.
 
+$btn-padding-x:                  1rem;
+$btn-padding-y:                  .375rem;
 $btn-font-weight:                normal !default;
 
-$btn-default-color:              #333 !default;
-$btn-default-bg:                 #fff !default;
-$btn-default-border:             #ccc !default;
-
 $btn-primary-color:              #fff !default;
 $btn-primary-bg:                 $brand-primary !default;
-$btn-primary-border:             darken($btn-primary-bg, 5%) !default;
+$btn-primary-border:             $btn-primary-bg !default;
 
-$btn-success-color:              #fff !default;
-$btn-success-bg:                 $brand-success !default;
-$btn-success-border:             darken($btn-success-bg, 5%) !default;
+$btn-secondary-color:            $gray-dark !default;
+$btn-secondary-bg:               #fff !default;
+$btn-secondary-border:           #ccc !default;
 
 $btn-info-color:                 #fff !default;
 $btn-info-bg:                    $brand-info !default;
-$btn-info-border:                darken($btn-info-bg, 5%) !default;
+$btn-info-border:                $btn-info-bg !default;
+
+$btn-success-color:              #fff !default;
+$btn-success-bg:                 $brand-success !default;
+$btn-success-border:             $btn-success-bg !default;
 
 $btn-warning-color:              #fff !default;
 $btn-warning-bg:                 $brand-warning !default;
-$btn-warning-border:             darken($btn-warning-bg, 5%) !default;
+$btn-warning-border:             $btn-warning-bg !default;
 
 $btn-danger-color:               #fff !default;
 $btn-danger-bg:                  $brand-danger !default;
-$btn-danger-border:              darken($btn-danger-bg, 5%) !default;
+$btn-danger-border:              $btn-danger-bg !default;
 
 $btn-link-disabled-color:        $gray-light !default;
 
+$btn-padding-x-sm:               .75rem !default;
+$btn-padding-y-sm:               .25rem !default;
+
+$btn-padding-x-lg:               1.25rem !default;
+$btn-padding-y-lg:               .75rem !default;
+
 // Allows for customizing button radius independently from global border radius
-$btn-border-radius-base:         $border-radius-base !default;
-$btn-border-radius-large:        $border-radius-large !default;
-$btn-border-radius-small:        $border-radius-small !default;
+$btn-border-radius:              $border-radius;
+$btn-border-radius-lg:           $border-radius-lg;
+$btn-border-radius-sm:           $border-radius-sm;
 
 
-//== Forms
-//
-//##
+// Forms
+
+$input-padding-x:                .75rem !default;
+$input-padding-y:                .375rem !default;
 
-//** `<input>` background color
 $input-bg:                       #fff !default;
-//** `<input disabled>` background color
 $input-bg-disabled:              $gray-lighter !default;
 
-//** Text color for `<input>`s
 $input-color:                    $gray !default;
-//** `<input>` border color
 $input-border:                   #ccc !default;
+$input-box-shadow:               inset 0 1px 1px rgba(0,0,0,.075) !default;
 
-// TODO: Rename `$input-border-radius` to `$input-border-radius-base` in v4
-//** Default `.form-control` border radius
-// This has no effect on `<select>`s in some browsers, due to the limited stylability of `<select>`s in CSS.
-$input-border-radius:            $border-radius-base !default;
-//** Large `.form-control` border radius
-$input-border-radius-large:      $border-radius-large !default;
-//** Small `.form-control` border radius
-$input-border-radius-small:      $border-radius-small !default;
+$input-border-radius:            $border-radius !default;
+$input-border-radius-lg:         $border-radius-lg !default;
+$input-border-radius-sm:         $border-radius-sm !default;
 
-//** Border color for inputs on focus
 $input-border-focus:             #66afe9 !default;
+$input-box-shadow-focus:         rgba(102,175,233,.6) !default;
 
-//** Placeholder text color
 $input-color-placeholder:        #999 !default;
 
-//** Default `.form-control` height
-$input-height-base:              ($line-height-computed + ($padding-base-vertical * 2) + 2) !default;
-//** Large `.form-control` height
-$input-height-large:             (ceil($font-size-large * $line-height-large) + ($padding-large-vertical * 2) + 2) !default;
-//** Small `.form-control` height
-$input-height-small:             (floor($font-size-small * $line-height-small) + ($padding-small-vertical * 2) + 2) !default;
+$input-padding-x-sm:             .75rem !default;
+$input-padding-y-sm:             .275rem !default;
 
-//** `.form-group` margin
-$form-group-margin-bottom:       15px !default;
+$input-padding-x-lg:             1.25rem !default;
+$input-padding-y-lg:             .75rem !default;
 
-$legend-color:                   $gray-dark !default;
-$legend-border-color:            #e5e5e5 !default;
+$input-height:                   (($font-size-base * $line-height) + ($input-padding-y * 2) + ($border-width * 2)) !default;
+$input-height-lg:                (($font-size-lg * $line-height-lg) + ($input-padding-y-lg * 2) + ($border-width * 2)) !default;
+$input-height-sm:                (($font-size-sm * $line-height-sm) + ($input-padding-y-sm * 2) + ($border-width * 2)) !default;
+
+$form-group-margin-bottom:       15px;
 
-//** Background color for textual input addons
 $input-group-addon-bg:           $gray-lighter !default;
-//** Border color for textual input addons
 $input-group-addon-border-color: $input-border !default;
 
-//** Disabled cursor for form controls and buttons.
 $cursor-disabled:                not-allowed !default;
 
+// Form validation icons
+$form-icon-success: "data:image/svg+xml;base64,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";
+$form-icon-warning: "data:image/svg+xml;base64,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";
+$form-icon-error: "data:image/svg+xml;base64,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";
+
 
-//== Dropdowns
+// Dropdowns
 //
-//## Dropdown menu container and contents.
+// Dropdown menu container and contents.
 
-//** Background for the dropdown menu.
 $dropdown-bg:                    #fff !default;
-//** Dropdown menu `border-color`.
 $dropdown-border:                rgba(0,0,0,.15) !default;
-//** Dropdown menu `border-color` **for IE8**.
-$dropdown-fallback-border:       #ccc !default;
-//** Divider color for between dropdown items.
 $dropdown-divider-bg:            #e5e5e5 !default;
 
-//** Dropdown link text color.
 $dropdown-link-color:            $gray-dark !default;
-//** Hover color for dropdown links.
 $dropdown-link-hover-color:      darken($gray-dark, 5%) !default;
-//** Hover background for dropdown links.
 $dropdown-link-hover-bg:         #f5f5f5 !default;
 
-//** Active dropdown menu item text color.
 $dropdown-link-active-color:     $component-active-color !default;
-//** Active dropdown menu item background color.
 $dropdown-link-active-bg:        $component-active-bg !default;
 
-//** Disabled dropdown menu item background color.
 $dropdown-link-disabled-color:   $gray-light !default;
 
-//** Text color for headers within dropdown menus.
 $dropdown-header-color:          $gray-light !default;
 
-//** Deprecated `$dropdown-caret-color` as of v3.1.0
-$dropdown-caret-color:           #000 !default;
-
 
-//-- Z-index master list
+// Z-index master list
 //
 // Warning: Avoid customizing these values. They're used for a bird's eye view
 // of components dependent on the z-axis and are designed to all work together.
@@ -279,158 +330,36 @@ $zindex-dropdown:          1000 !default;
 $zindex-popover:           1060 !default;
 $zindex-tooltip:           1070 !default;
 $zindex-navbar-fixed:      1030 !default;
-$zindex-modal-background:  1040 !default;
+$zindex-navbar-sticky:     1030 !default;
+$zindex-modal-bg:          1040 !default;
 $zindex-modal:             1050 !default;
 
 
-//== Media queries breakpoints
-//
-//## Define the breakpoints at which your layout will change, adapting to different screen sizes.
-
-// Extra small screen / phone
-//** Deprecated `$screen-xs` as of v3.0.1
-$screen-xs:                  480px !default;
-//** Deprecated `$screen-xs-min` as of v3.2.0
-$screen-xs-min:              $screen-xs !default;
-//** Deprecated `$screen-phone` as of v3.0.1
-$screen-phone:               $screen-xs-min !default;
-
-// Small screen / tablet
-//** Deprecated `$screen-sm` as of v3.0.1
-$screen-sm:                  768px !default;
-$screen-sm-min:              $screen-sm !default;
-//** Deprecated `$screen-tablet` as of v3.0.1
-$screen-tablet:              $screen-sm-min !default;
-
-// Medium screen / desktop
-//** Deprecated `$screen-md` as of v3.0.1
-$screen-md:                  992px !default;
-$screen-md-min:              $screen-md !default;
-//** Deprecated `$screen-desktop` as of v3.0.1
-$screen-desktop:             $screen-md-min !default;
-
-// Large screen / wide desktop
-//** Deprecated `$screen-lg` as of v3.0.1
-$screen-lg:                  1200px !default;
-$screen-lg-min:              $screen-lg !default;
-//** Deprecated `$screen-lg-desktop` as of v3.0.1
-$screen-lg-desktop:          $screen-lg-min !default;
-
-// So media queries don't overlap when required, provide a maximum
-$screen-xs-max:              ($screen-sm-min - 1) !default;
-$screen-sm-max:              ($screen-md-min - 1) !default;
-$screen-md-max:              ($screen-lg-min - 1) !default;
-
-
-//== Grid system
-//
-//## Define your custom responsive grid.
+// Navbar
 
-//** Number of columns in the grid.
-$grid-columns:              12 !default;
-//** Padding between columns. Gets divided in half for the left and right.
-$grid-gutter-width:         30px !default;
-// Navbar collapse
-//** Point at which the navbar becomes uncollapsed.
-$grid-float-breakpoint:     $screen-sm-min !default;
-//** Point at which the navbar begins collapsing.
-$grid-float-breakpoint-max: ($grid-float-breakpoint - 1) !default;
+$navbar-border-radius:              $border-radius !default;
+$navbar-padding-horizontal:         $spacer !default;
+$navbar-padding-vertical:           ($spacer / 2) !default;
 
+$navbar-dark-color:                 rgba(255,255,255,.5);
+$navbar-dark-hover-color:           rgba(255,255,255,.75);
+$navbar-dark-active-color:          rgba(255,255,255,1);
+$navbar-dark-disabled-color:        rgba(255,255,255,.25);
 
-//== Container sizes
-//
-//## Define the maximum width of `.container` for different screen sizes.
-
-// Small screen / tablet
-$container-tablet:             (720px + $grid-gutter-width) !default;
-//** For `$screen-sm-min` and up.
-$container-sm:                 $container-tablet !default;
+$navbar-light-color:                rgba(0,0,0,.3);
+$navbar-light-hover-color:          rgba(0,0,0,.6);
+$navbar-light-active-color:         rgba(0,0,0,.8);
+$navbar-light-disabled-color:       rgba(0,0,0,.15);
 
-// Medium screen / desktop
-$container-desktop:            (940px + $grid-gutter-width) !default;
-//** For `$screen-md-min` and up.
-$container-md:                 $container-desktop !default;
 
-// Large screen / wide desktop
-$container-large-desktop:      (1140px + $grid-gutter-width) !default;
-//** For `$screen-lg-min` and up.
-$container-lg:                 $container-large-desktop !default;
-
-
-//== Navbar
-//
-//##
-
-// Basics of a navbar
-$navbar-height:                    50px !default;
-$navbar-margin-bottom:             $line-height-computed !default;
-$navbar-border-radius:             $border-radius-base !default;
-$navbar-padding-horizontal:        floor(($grid-gutter-width / 2)) !default;
-$navbar-padding-vertical:          (($navbar-height - $line-height-computed) / 2) !default;
-$navbar-collapse-max-height:       340px !default;
-
-$navbar-default-color:             #777 !default;
-$navbar-default-bg:                #f8f8f8 !default;
-$navbar-default-border:            darken($navbar-default-bg, 6.5%) !default;
-
-// Navbar links
-$navbar-default-link-color:                #777 !default;
-$navbar-default-link-hover-color:          #333 !default;
-$navbar-default-link-hover-bg:             transparent !default;
-$navbar-default-link-active-color:         #555 !default;
-$navbar-default-link-active-bg:            darken($navbar-default-bg, 6.5%) !default;
-$navbar-default-link-disabled-color:       #ccc !default;
-$navbar-default-link-disabled-bg:          transparent !default;
-
-// Navbar brand label
-$navbar-default-brand-color:               $navbar-default-link-color !default;
-$navbar-default-brand-hover-color:         darken($navbar-default-brand-color, 10%) !default;
-$navbar-default-brand-hover-bg:            transparent !default;
-
-// Navbar toggle
-$navbar-default-toggle-hover-bg:           #ddd !default;
-$navbar-default-toggle-icon-bar-bg:        #888 !default;
-$navbar-default-toggle-border-color:       #ddd !default;
-
-
-//=== Inverted navbar
-// Reset inverted navbar basics
-$navbar-inverse-color:                      lighten($gray-light, 15%) !default;
-$navbar-inverse-bg:                         #222 !default;
-$navbar-inverse-border:                     darken($navbar-inverse-bg, 10%) !default;
-
-// Inverted navbar links
-$navbar-inverse-link-color:                 lighten($gray-light, 15%) !default;
-$navbar-inverse-link-hover-color:           #fff !default;
-$navbar-inverse-link-hover-bg:              transparent !default;
-$navbar-inverse-link-active-color:          $navbar-inverse-link-hover-color !default;
-$navbar-inverse-link-active-bg:             darken($navbar-inverse-bg, 10%) !default;
-$navbar-inverse-link-disabled-color:        #444 !default;
-$navbar-inverse-link-disabled-bg:           transparent !default;
-
-// Inverted navbar brand label
-$navbar-inverse-brand-color:                $navbar-inverse-link-color !default;
-$navbar-inverse-brand-hover-color:          #fff !default;
-$navbar-inverse-brand-hover-bg:             transparent !default;
-
-// Inverted navbar toggle
-$navbar-inverse-toggle-hover-bg:            #333 !default;
-$navbar-inverse-toggle-icon-bar-bg:         #fff !default;
-$navbar-inverse-toggle-border-color:        #333 !default;
-
-
-//== Navs
-//
-//##
+// Navs
 
-//=== Shared nav styles
-$nav-link-padding:                          10px 15px !default;
+$nav-link-padding:                          .5em 1em !default;
 $nav-link-hover-bg:                         $gray-lighter !default;
 
 $nav-disabled-link-color:                   $gray-light !default;
 $nav-disabled-link-hover-color:             $gray-light !default;
 
-//== Tabs
 $nav-tabs-border-color:                     #ddd !default;
 
 $nav-tabs-link-hover-border-color:          $gray-lighter !default;
@@ -442,15 +371,20 @@ $nav-tabs-active-link-hover-border-color:   #ddd !default;
 $nav-tabs-justified-link-border-color:            #ddd !default;
 $nav-tabs-justified-active-link-border-color:     $body-bg !default;
 
-//== Pills
-$nav-pills-border-radius:                   $border-radius-base !default;
+$nav-pills-border-radius:                   $border-radius !default;
 $nav-pills-active-link-hover-bg:            $component-active-bg !default;
 $nav-pills-active-link-hover-color:         $component-active-color !default;
 
 
-//== Pagination
-//
-//##
+// Pagination
+
+$pagination-padding-x:                .75rem !default;
+$pagination-padding-y:                .5rem !default;
+$pagination-padding-x-sm:             .75rem !default;
+$pagination-padding-y-sm:             .275rem !default;
+$pagination-padding-x-lg:             1.5rem !default;
+$pagination-padding-y-lg:             .75rem !default;
+
 
 $pagination-color:                     $link-color !default;
 $pagination-bg:                        #fff !default;
@@ -469,9 +403,7 @@ $pagination-disabled-bg:               #fff !default;
 $pagination-disabled-border:           #ddd !default;
 
 
-//== Pager
-//
-//##
+// Pager
 
 $pager-bg:                             $pagination-bg !default;
 $pager-border:                         $pagination-border !default;
@@ -485,135 +417,88 @@ $pager-active-color:                   $pagination-active-color !default;
 $pager-disabled-color:                 $pagination-disabled-color !default;
 
 
-//== Jumbotron
-//
-//##
+// Jumbotron
 
-$jumbotron-padding:              30px !default;
-$jumbotron-color:                inherit !default;
+$jumbotron-padding:              2rem !default;
 $jumbotron-bg:                   $gray-lighter !default;
-$jumbotron-heading-color:        inherit !default;
-$jumbotron-font-size:            ceil(($font-size-base * 1.5)) !default;
-$jumbotron-heading-font-size:    ceil(($font-size-base * 4.5)) !default;
 
 
-//== Form states and alerts
+// Form states and alerts
 //
-//## Define colors for form feedback states and, by default, alerts.
+// Define colors for form feedback states and, by default, alerts.
 
 $state-success-text:             #3c763d !default;
 $state-success-bg:               #dff0d8 !default;
-$state-success-border:           darken(adjust-hue($state-success-bg, -10), 5%) !default;
+$state-success-border:           darken($state-success-bg, 5%) !default;
 
 $state-info-text:                #31708f !default;
 $state-info-bg:                  #d9edf7 !default;
-$state-info-border:              darken(adjust-hue($state-info-bg, -10), 7%) !default;
+$state-info-border:              darken($state-info-bg, 7%) !default;
 
 $state-warning-text:             #8a6d3b !default;
 $state-warning-bg:               #fcf8e3 !default;
-$state-warning-border:           darken(adjust-hue($state-warning-bg, -10), 5%) !default;
+$state-warning-border:           darken($state-warning-bg, 5%) !default;
 
 $state-danger-text:              #a94442 !default;
 $state-danger-bg:                #f2dede !default;
-$state-danger-border:            darken(adjust-hue($state-danger-bg, -10), 5%) !default;
+$state-danger-border:            darken($state-danger-bg, 5%) !default;
 
 
-//== Tooltips
-//
-//##
+// Tooltips
 
-//** Tooltip max width
 $tooltip-max-width:           200px !default;
-//** Tooltip text color
 $tooltip-color:               #fff !default;
-//** Tooltip background color
 $tooltip-bg:                  #000 !default;
 $tooltip-opacity:             .9 !default;
 
-//** Tooltip arrow width
 $tooltip-arrow-width:         5px !default;
-//** Tooltip arrow color
 $tooltip-arrow-color:         $tooltip-bg !default;
 
 
-//== Popovers
-//
-//##
+// Popovers
 
-//** Popover body background color
 $popover-bg:                          #fff !default;
-//** Popover maximum width
 $popover-max-width:                   276px !default;
-//** Popover border color
 $popover-border-color:                rgba(0,0,0,.2) !default;
-//** Popover fallback border color
 $popover-fallback-border-color:       #ccc !default;
 
-//** Popover title background color
 $popover-title-bg:                    darken($popover-bg, 3%) !default;
 
-//** Popover arrow width
 $popover-arrow-width:                 10px !default;
-//** Popover arrow color
 $popover-arrow-color:                 $popover-bg !default;
 
-//** Popover outer arrow width
 $popover-arrow-outer-width:           ($popover-arrow-width + 1) !default;
-//** Popover outer arrow color
-$popover-arrow-outer-color:           fade_in($popover-border-color, 0.05) !default;
-//** Popover outer arrow fallback color
+$popover-arrow-outer-color:           fade-in($popover-border-color, 0.05) !default;
 $popover-arrow-outer-fallback-color:  darken($popover-fallback-border-color, 20%) !default;
 
 
-//== Labels
-//
-//##
+// Labels
 
-//** Default label background color
 $label-default-bg:            $gray-light !default;
-//** Primary label background color
 $label-primary-bg:            $brand-primary !default;
-//** Success label background color
 $label-success-bg:            $brand-success !default;
-//** Info label background color
 $label-info-bg:               $brand-info !default;
-//** Warning label background color
 $label-warning-bg:            $brand-warning !default;
-//** Danger label background color
 $label-danger-bg:             $brand-danger !default;
 
-//** Default label text color
 $label-color:                 #fff !default;
-//** Default text color of a linked label
 $label-link-hover-color:      #fff !default;
 
 
-//== Modals
-//
-//##
+// Modals
 
-//** Padding applied to the modal body
+// Padding applied to the modal body
 $modal-inner-padding:         15px !default;
 
-//** Padding applied to the modal title
 $modal-title-padding:         15px !default;
-//** Modal title line-height
-$modal-title-line-height:     $line-height-base !default;
+$modal-title-line-height:     $line-height !default;
 
-//** Background color of modal content area
 $modal-content-bg:                             #fff !default;
-//** Modal content border color
 $modal-content-border-color:                   rgba(0,0,0,.2) !default;
-//** Modal content border color **for IE8**
-$modal-content-fallback-border-color:          #999 !default;
 
-//** Modal backdrop background color
 $modal-backdrop-bg:           #000 !default;
-//** Modal backdrop opacity
 $modal-backdrop-opacity:      .5 !default;
-//** Modal header border color
 $modal-header-border-color:   #e5e5e5 !default;
-//** Modal footer border color
 $modal-footer-border-color:   $modal-header-border-color !default;
 
 $modal-lg:                    900px !default;
@@ -621,12 +506,12 @@ $modal-md:                    600px !default;
 $modal-sm:                    300px !default;
 
 
-//== Alerts
+// Alerts
 //
-//## Define alert colors, border radius, and padding.
+// Define alert colors, border radius, and padding.
 
 $alert-padding:               15px !default;
-$alert-border-radius:         $border-radius-base !default;
+$alert-border-radius:         $border-radius !default;
 $alert-link-font-weight:      bold !default;
 
 $alert-success-bg:            $state-success-bg !default;
@@ -646,56 +531,33 @@ $alert-danger-text:           $state-danger-text !default;
 $alert-danger-border:         $state-danger-border !default;
 
 
-//== Progress bars
-//
-//##
+// Progress bars
 
-//** Background color of the whole progress component
 $progress-bg:                 #f5f5f5 !default;
-//** Progress bar text color
 $progress-bar-color:          #fff !default;
-//** Variable for setting rounded corners on progress bar.
-$progress-border-radius:      $border-radius-base !default;
+$progress-border-radius:      $border-radius !default;
 
-//** Default progress bar color
 $progress-bar-bg:             $brand-primary !default;
-//** Success progress bar color
 $progress-bar-success-bg:     $brand-success !default;
-//** Warning progress bar color
 $progress-bar-warning-bg:     $brand-warning !default;
-//** Danger progress bar color
 $progress-bar-danger-bg:      $brand-danger !default;
-//** Info progress bar color
 $progress-bar-info-bg:        $brand-info !default;
 
 
-//== List group
-//
-//##
+// List group
 
-//** Background color on `.list-group-item`
 $list-group-bg:                 #fff !default;
-//** `.list-group-item` border color
 $list-group-border:             #ddd !default;
-//** List group border radius
-$list-group-border-radius:      $border-radius-base !default;
+$list-group-border-radius:      $border-radius !default;
 
-//** Background color of single list items on hover
 $list-group-hover-bg:           #f5f5f5 !default;
-//** Text color of active list items
 $list-group-active-color:       $component-active-color !default;
-//** Background color of active list items
 $list-group-active-bg:          $component-active-bg !default;
-//** Border color of active list elements
 $list-group-active-border:      $list-group-active-bg !default;
-//** Text color for content within active list items
 $list-group-active-text-color:  lighten($list-group-active-bg, 40%) !default;
 
-//** Text color of disabled list items
 $list-group-disabled-color:      $gray-light !default;
-//** Background color of disabled list items
 $list-group-disabled-bg:         $gray-lighter !default;
-//** Text color for content within disabled list items
 $list-group-disabled-text-color: $list-group-disabled-color !default;
 
 $list-group-link-color:         #555 !default;
@@ -703,110 +565,26 @@ $list-group-link-hover-color:   $list-group-link-color !default;
 $list-group-link-heading-color: #333 !default;
 
 
-//== Panels
-//
-//##
-
-$panel-bg:                    #fff !default;
-$panel-body-padding:          15px !default;
-$panel-heading-padding:       10px 15px !default;
-$panel-footer-padding:        $panel-heading-padding !default;
-$panel-border-radius:         $border-radius-base !default;
-
-//** Border color for elements within panels
-$panel-inner-border:          #ddd !default;
-$panel-footer-bg:             #f5f5f5 !default;
-
-$panel-default-text:          $gray-dark !default;
-$panel-default-border:        #ddd !default;
-$panel-default-heading-bg:    #f5f5f5 !default;
-
-$panel-primary-text:          #fff !default;
-$panel-primary-border:        $brand-primary !default;
-$panel-primary-heading-bg:    $brand-primary !default;
-
-$panel-success-text:          $state-success-text !default;
-$panel-success-border:        $state-success-border !default;
-$panel-success-heading-bg:    $state-success-bg !default;
-
-$panel-info-text:             $state-info-text !default;
-$panel-info-border:           $state-info-border !default;
-$panel-info-heading-bg:       $state-info-bg !default;
-
-$panel-warning-text:          $state-warning-text !default;
-$panel-warning-border:        $state-warning-border !default;
-$panel-warning-heading-bg:    $state-warning-bg !default;
+// Image thumbnails
 
-$panel-danger-text:           $state-danger-text !default;
-$panel-danger-border:         $state-danger-border !default;
-$panel-danger-heading-bg:     $state-danger-bg !default;
-
-
-//== Thumbnails
-//
-//##
-
-//** Padding around the thumbnail image
-$thumbnail-padding:           4px !default;
-//** Thumbnail background color
+$thumbnail-padding:           .25rem !default;
 $thumbnail-bg:                $body-bg !default;
-//** Thumbnail border color
 $thumbnail-border:            #ddd !default;
-//** Thumbnail border radius
-$thumbnail-border-radius:     $border-radius-base !default;
-
-//** Custom text color for thumbnail captions
-$thumbnail-caption-color:     $text-color !default;
-//** Padding around the thumbnail caption
-$thumbnail-caption-padding:   9px !default;
-
-
-//== Wells
-//
-//##
-
-$well-bg:                     #f5f5f5 !default;
-$well-border:                 darken($well-bg, 7%) !default;
-
-
-//== Badges
-//
-//##
-
-$badge-color:                 #fff !default;
-//** Linked badge text color on hover
-$badge-link-hover-color:      #fff !default;
-$badge-bg:                    $gray-light !default;
+$thumbnail-border-radius:     $border-radius !default;
 
-//** Badge text color in active nav link
-$badge-active-color:          $link-color !default;
-//** Badge background color in active nav link
-$badge-active-bg:             #fff !default;
 
-$badge-font-weight:           bold !default;
-$badge-line-height:           1 !default;
-$badge-border-radius:         10px !default;
+// Breadcrumbs
 
+$breadcrumb-padding-vertical:   .75rem !default;
+$breadcrumb-padding-horizontal: 1rem !default;
 
-//== Breadcrumbs
-//
-//##
-
-$breadcrumb-padding-vertical:   8px !default;
-$breadcrumb-padding-horizontal: 15px !default;
-//** Breadcrumb background color
-$breadcrumb-bg:                 #f5f5f5 !default;
-//** Breadcrumb text color
-$breadcrumb-color:              #ccc !default;
-//** Text color of current page in the breadcrumb
+$breadcrumb-bg:                 $gray-lighter !default;
+$breadcrumb-divider-color:      $gray-light !default;
 $breadcrumb-active-color:       $gray-light !default;
-//** Textual separator for between breadcrumb elements
-$breadcrumb-separator:          "/" !default;
+$breadcrumb-divider:            "/" !default;
 
 
-//== Carousel
-//
-//##
+// Carousel
 
 $carousel-text-shadow:                        0 1px 2px rgba(0,0,0,.6) !default;
 
@@ -821,52 +599,22 @@ $carousel-indicator-border-color:             #fff !default;
 $carousel-caption-color:                      #fff !default;
 
 
-//== Close
-//
-//##
+// Close
 
 $close-font-weight:           bold !default;
 $close-color:                 #000 !default;
 $close-text-shadow:           0 1px 0 #fff !default;
 
 
-//== Code
-//
-//##
+// Code
 
-$code-color:                  #c7254e !default;
-$code-bg:                     #f9f2f4 !default;
+$code-color:                  #bd4147 !default;
+$code-bg:                     #f7f7f9 !default;
 
 $kbd-color:                   #fff !default;
 $kbd-bg:                      #333 !default;
 
-$pre-bg:                      #f5f5f5 !default;
+$pre-bg:                      #f7f7f9 !default;
 $pre-color:                   $gray-dark !default;
 $pre-border-color:            #ccc !default;
 $pre-scrollable-max-height:   340px !default;
-
-
-//== Type
-//
-//##
-
-//** Horizontal offset for forms and lists.
-$component-offset-horizontal: 180px !default;
-//** Text muted color
-$text-muted:                  $gray-light !default;
-//** Abbreviations and acronyms border color
-$abbr-border-color:           $gray-light !default;
-//** Headings small color
-$headings-small-color:        $gray-light !default;
-//** Blockquote small color
-$blockquote-small-color:      $gray-light !default;
-//** Blockquote font size
-$blockquote-font-size:        ($font-size-base * 1.25) !default;
-//** Blockquote border color
-$blockquote-border-color:     $gray-lighter !default;
-//** Page header border color
-$page-header-border-color:    $gray-lighter !default;
-//** Width of horizontal description list titles
-$dl-horizontal-offset:        $component-offset-horizontal !default;
-//** Horizontal line color.
-$hr-border:                   $gray-lighter !default;
diff --git a/assets/stylesheets/bootstrap/_wells.scss b/assets/stylesheets/bootstrap/_wells.scss
deleted file mode 100644
index b865711..0000000
--- a/assets/stylesheets/bootstrap/_wells.scss
+++ /dev/null
@@ -1,29 +0,0 @@
-//
-// Wells
-// --------------------------------------------------
-
-
-// Base class
-.well {
-  min-height: 20px;
-  padding: 19px;
-  margin-bottom: 20px;
-  background-color: $well-bg;
-  border: 1px solid $well-border;
-  border-radius: $border-radius-base;
-  @include box-shadow(inset 0 1px 1px rgba(0,0,0,.05));
-  blockquote {
-    border-color: #ddd;
-    border-color: rgba(0,0,0,.15);
-  }
-}
-
-// Sizes
-.well-lg {
-  padding: 24px;
-  border-radius: $border-radius-large;
-}
-.well-sm {
-  padding: 9px;
-  border-radius: $border-radius-small;
-}
diff --git a/assets/stylesheets/bootstrap/mixins/_alerts.scss b/assets/stylesheets/bootstrap/mixins/_alert.scss
index 3faf0b5..6ed3a81 100644
--- a/assets/stylesheets/bootstrap/mixins/_alerts.scss
+++ b/assets/stylesheets/bootstrap/mixins/_alert.scss
@@ -1,14 +1,14 @@
 // Alerts
 
-@mixin alert-variant($background, $border, $text-color) {
+@mixin alert-variant($background, $border, $body-color) {
   background-color: $background;
   border-color: $border;
-  color: $text-color;
+  color: $body-color;
 
   hr {
     border-top-color: darken($border, 5%);
   }
   .alert-link {
-    color: darken($text-color, 10%);
+    color: darken($body-color, 10%);
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_background-variant.scss b/assets/stylesheets/bootstrap/mixins/_background-variant.scss
index 4c7769e..a665f25 100644
--- a/assets/stylesheets/bootstrap/mixins/_background-variant.scss
+++ b/assets/stylesheets/bootstrap/mixins/_background-variant.scss
@@ -3,10 +3,12 @@
 // [converter] $parent hack
 @mixin bg-variant($parent, $color) {
   #{$parent} {
+    color: #fff;
     background-color: $color;
   }
-  a#{$parent}:hover,
-  a#{$parent}:focus {
-    background-color: darken($color, 10%);
+  a#{$parent} {
+    @include hover-focus {
+      background-color: darken($color, 10%);
+    }
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_border-radius.scss b/assets/stylesheets/bootstrap/mixins/_border-radius.scss
index ce19499..0b76c30 100644
--- a/assets/stylesheets/bootstrap/mixins/_border-radius.scss
+++ b/assets/stylesheets/bootstrap/mixins/_border-radius.scss
@@ -4,14 +4,17 @@
   border-top-right-radius: $radius;
    border-top-left-radius: $radius;
 }
+
 @mixin border-right-radius($radius) {
   border-bottom-right-radius: $radius;
      border-top-right-radius: $radius;
 }
+
 @mixin border-bottom-radius($radius) {
   border-bottom-right-radius: $radius;
    border-bottom-left-radius: $radius;
 }
+
 @mixin border-left-radius($radius) {
   border-bottom-left-radius: $radius;
      border-top-left-radius: $radius;
diff --git a/assets/stylesheets/bootstrap/mixins/_breakpoints.scss b/assets/stylesheets/bootstrap/mixins/_breakpoints.scss
new file mode 100644
index 0000000..790bb73
--- /dev/null
+++ b/assets/stylesheets/bootstrap/mixins/_breakpoints.scss
@@ -0,0 +1,76 @@
+// Breakpoint viewport sizes and media queries.
+//
+// Breakpoints are defined as a map of (name: minimum width), order from small to large:
+//
+//    (xs: 0, sm: 34rem, md: 45rem)
+//
+// The map defined in the `$grid-breakpoints` global variable is used as the `$breakpoints` argument by default.
+
+// Name of the next breakpoint, or null for the last breakpoint.
+//
+//    >> breakpoint-next(sm)
+//    md
+//    >> breakpoint-next(sm, $breakpoints: (xs: 0, sm: 34rem, md: 45rem))
+//    md
+//    >> breakpoint-next(sm, $breakpoint-names: (xs sm md))
+//    md
+@function breakpoint-next($name, $breakpoints: $grid-breakpoints, $breakpoint-names: map-keys($breakpoints)) {
+  $n: index($breakpoint-names, $name);
+  @return if($n < length($breakpoint-names), nth($breakpoint-names, $n + 1), null);
+}
+
+// Minimum breakpoint width. Null for the smallest (first) breakpoint.
+//
+//    >> breakpoint-min(sm, (xs: 0, sm: 34rem, md: 45rem))
+//    34rem
+@function breakpoint-min($name, $breakpoints: $grid-breakpoints) {
+  $min: map-get($breakpoints, $name);
+  @return if($min != 0, $min, null);
+}
+
+// Maximum breakpoint width. Null for the largest (last) breakpoint.
+// The maximum value is calculated as the minimum of the next one less 0.1.
+//
+//    >> breakpoint-max(sm, (xs: 0, sm: 34rem, md: 45rem))
+//    44.9rem
+@function breakpoint-max($name, $breakpoints: $grid-breakpoints) {
+  $next: breakpoint-next($name, $breakpoints);
+  @return if($next, breakpoint-min($next, $breakpoints) - 0.1, null);
+}
+
+// Media of at least the minimum breakpoint width. No query for the smallest breakpoint.
+// Makes the @content apply to the given breakpoint and wider.
+@mixin media-breakpoint-up($name, $breakpoints: $grid-breakpoints) {
+  $min: breakpoint-min($name, $breakpoints);
+  @if $min {
+    @media (min-width: $min) {
+      @content;
+    }
+  } @else {
+    @content;
+  }
+}
+
+// Media of at most the maximum breakpoint width. No query for the largest breakpoint.
+// Makes the @content apply to the given breakpoint and narrower.
+@mixin media-breakpoint-down($name, $breakpoints: $grid-breakpoints) {
+  $max: breakpoint-max($name, $breakpoints);
+  @if $max {
+    @media (max-width: $max) {
+      @content;
+    }
+  } @else {
+    @content;
+  }
+}
+
+// Media between the breakpoint's minimum and maximum widths.
+// No minimum for the smallest breakpoint, and no maximum for the largest one.
+// Makes the @content apply only to the given breakpoint, not viewports any wider or narrower.
+@mixin media-breakpoint-only($name, $breakpoints: $grid-breakpoints) {
+  @include media-breakpoint-up($name, $breakpoints) {
+    @include media-breakpoint-down($name, $breakpoints) {
+      @content;
+    }
+  }
+}
diff --git a/assets/stylesheets/bootstrap/mixins/_buttons.scss b/assets/stylesheets/bootstrap/mixins/_buttons.scss
index ad31187..75d2847 100644
--- a/assets/stylesheets/bootstrap/mixins/_buttons.scss
+++ b/assets/stylesheets/bootstrap/mixins/_buttons.scss
@@ -7,62 +7,86 @@
   color: $color;
   background-color: $background;
   border-color: $border;
+//  $shadow: inset 0 1px 0 rgba(255,255,255,.15), 0 1px 1px rgba(0,0,0,.075);
+//  .box-shadow($shadow);
+
+  $active-background: darken($background, 10%);
+  $active-border: darken($border, 12%);
 
   &:focus,
-  &.focus {
-    color: $color;
-    background-color: darken($background, 10%);
-        border-color: darken($border, 25%);
-  }
-  &:hover {
-    color: $color;
-    background-color: darken($background, 10%);
-        border-color: darken($border, 12%);
-  }
+  &.focus,
   &:active,
   &.active,
   .open > &.dropdown-toggle {
     color: $color;
-    background-color: darken($background, 10%);
-        border-color: darken($border, 12%);
-
-    &:hover,
-    &:focus,
-    &.focus {
-      color: $color;
-      background-color: darken($background, 17%);
-          border-color: darken($border, 25%);
-    }
+    background-color: $active-background;
+        border-color: $active-border;
+  }
+  @include hover {
+    color: $color;
+    background-color: $active-background;
+        border-color: $active-border;
   }
   &:active,
   &.active,
   .open > &.dropdown-toggle {
+    // Remove the gradient for the pressed/active state
     background-image: none;
+    @include box-shadow(inset 0 3px 5px rgba(0,0,0,.125));
   }
   &.disabled,
-  &[disabled],
+  &:disabled,
   fieldset[disabled] & {
-    &,
-    &:hover,
     &:focus,
-    &.focus,
-    &:active,
-    &.active {
+    &.focus {
+      background-color: $background;
+          border-color: $border;
+    }
+    @include hover {
       background-color: $background;
           border-color: $border;
     }
   }
+}
 
-  .badge {
-    color: $background;
+@mixin button-outline-variant($color) {
+  color: $color;
+  background-image: none;
+  background-color: transparent;
+  border-color: $color;
+
+  &:focus,
+  &.focus,
+  &:active,
+  &.active,
+  .open > &.dropdown-toggle {
+    color: #fff;
+    background-color: $color;
+        border-color: $color;
+  }
+  @include hover {
+    color: #fff;
     background-color: $color;
+        border-color: $color;
+  }
+
+  &.disabled,
+  &:disabled,
+  fieldset[disabled] & {
+    &:focus,
+    &.focus {
+      border-color: lighten($color, 20%);
+    }
+    @include hover {
+      border-color: lighten($color, 20%);
+    }
   }
 }
 
 // Button sizes
-@mixin button-size($padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {
-  padding: $padding-vertical $padding-horizontal;
+@mixin button-size($padding-y, $padding-x, $font-size, $line-height, $border-radius) {
+  padding: $padding-y $padding-x;
   font-size: $font-size;
   line-height: $line-height;
-  border-radius: $border-radius;
+  @include border-radius($border-radius);
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_forms.scss b/assets/stylesheets/bootstrap/mixins/_forms.scss
index 277aa5f..764c5e0 100644
--- a/assets/stylesheets/bootstrap/mixins/_forms.scss
+++ b/assets/stylesheets/bootstrap/mixins/_forms.scss
@@ -1,9 +1,9 @@
 // Form validation states
 //
-// Used in forms.less to generate the form validation CSS for warnings, errors,
+// Used in _forms.scss to generate the form validation CSS for warnings, errors,
 // and successes.
 
-@mixin form-control-validation($text-color: #555, $border-color: #ccc, $background-color: #f5f5f5) {
+@mixin form-control-validation($state, $color) {
   // Color the label and help text
   .help-block,
   .control-label,
@@ -15,35 +15,36 @@
   &.checkbox label,
   &.radio-inline label,
   &.checkbox-inline label  {
-    color: $text-color;
+    color: $color;
   }
   // Set the border and box shadow on specific inputs to match
   .form-control {
-    border-color: $border-color;
-    @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
+    border-color: $color;
+    // @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075)); // Redeclare so transitions work
+
     &:focus {
-      border-color: darken($border-color, 10%);
-      $shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten($border-color, 20%);
-      @include box-shadow($shadow);
+      // border-color: darken($border-color, 10%);
+      // $shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 6px lighten($border-color, 20%);
+      // @include box-shadow($shadow);
     }
   }
+
   // Set validation states also for addons
   .input-group-addon {
-    color: $text-color;
-    border-color: $border-color;
-    background-color: $background-color;
+    color: $color;
+    border-color: $color;
+    background-color: lighten($color, 40%);
   }
   // Optional feedback icon
   .form-control-feedback {
-    color: $text-color;
+    color: $color;
   }
 }
 
-
 // Form control focus state
 //
 // Generate a customized focus state and for any input with the specified color,
-// which defaults to the `$input-border-focus` variable.
+// which defaults to the `@input-border-focus` variable.
 //
 // We highly encourage you to not customize the default value, but instead use
 // this to tweak colors on an as-needed basis. This aesthetic change is based on
@@ -52,12 +53,12 @@
 //
 // Example usage: change the default blue border and shadow to white for better
 // contrast against a dark gray background.
-@mixin form-control-focus($color: $input-border-focus) {
-  $color-rgba: rgba(red($color), green($color), blue($color), .6);
+@mixin form-control-focus() {
   &:focus {
-    border-color: $color;
-    outline: 0;
-    @include box-shadow(inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px $color-rgba);
+    border-color: $input-border-focus;
+    outline: none;
+    $shadow: inset 0 1px 1px rgba(0,0,0,.075), 0 0 8px $input-box-shadow-focus;
+    @include box-shadow($shadow);
   }
 }
 
@@ -66,14 +67,14 @@
 // Relative text size, padding, and border-radii changes for form controls. For
 // horizontal sizing, wrap controls in the predefined grid classes. `<select>`
 // element gets special love because it's special, and that's a fact!
-// [converter] $parent hack
+
 @mixin input-size($parent, $input-height, $padding-vertical, $padding-horizontal, $font-size, $line-height, $border-radius) {
   #{$parent} {
     height: $input-height;
     padding: $padding-vertical $padding-horizontal;
     font-size: $font-size;
     line-height: $line-height;
-    border-radius: $border-radius;
+    @include border-radius($border-radius);
   }
 
   select#{$parent} {
diff --git a/assets/stylesheets/bootstrap/mixins/_gradients.scss b/assets/stylesheets/bootstrap/mixins/_gradients.scss
index a8939f5..c57eddc 100644
--- a/assets/stylesheets/bootstrap/mixins/_gradients.scss
+++ b/assets/stylesheets/bootstrap/mixins/_gradients.scss
@@ -1,58 +1,43 @@
 // Gradients
 
-
-
 // Horizontal gradient, from left to right
 //
 // Creates two color stops, start and end, by specifying a color and position for each color stop.
-// Color stops are not available in IE9 and below.
+// Color stops are not available in IE9.
 @mixin gradient-horizontal($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
-  background-image: -webkit-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // Safari 5.1-6, Chrome 10+
-  background-image: -o-linear-gradient(left, $start-color $start-percent, $end-color $end-percent); // Opera 12
-  background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+  background-image: linear-gradient(to right, $start-color $start-percent, $end-color $end-percent);
   background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9
 }
 
 // Vertical gradient, from top to bottom
 //
 // Creates two color stops, start and end, by specifying a color and position for each color stop.
-// Color stops are not available in IE9 and below.
+// Color stops are not available in IE9.
 @mixin gradient-vertical($start-color: #555, $end-color: #333, $start-percent: 0%, $end-percent: 100%) {
-  background-image: -webkit-linear-gradient(top, $start-color $start-percent, $end-color $end-percent);  // Safari 5.1-6, Chrome 10+
-  background-image: -o-linear-gradient(top, $start-color $start-percent, $end-color $end-percent);  // Opera 12
-  background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+  background-image: linear-gradient(to bottom, $start-color $start-percent, $end-color $end-percent);
   background-repeat: repeat-x;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9
 }
 
 @mixin gradient-directional($start-color: #555, $end-color: #333, $deg: 45deg) {
   background-repeat: repeat-x;
-  background-image: -webkit-linear-gradient($deg, $start-color, $end-color); // Safari 5.1-6, Chrome 10+
-  background-image: -o-linear-gradient($deg, $start-color, $end-color); // Opera 12
-  background-image: linear-gradient($deg, $start-color, $end-color); // Standard, IE10, Firefox 16+, Opera 12.10+, Safari 7+, Chrome 26+
+  background-image: linear-gradient($deg, $start-color, $end-color);
 }
 @mixin gradient-horizontal-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
-  background-image: -webkit-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
-  background-image: -o-linear-gradient(left, $start-color, $mid-color $color-stop, $end-color);
   background-image: linear-gradient(to right, $start-color, $mid-color $color-stop, $end-color);
   background-repeat: no-repeat;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 and down, gets no color-stop at all for proper fallback
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=1); // IE9 gets no color-stop at all for proper fallback
 }
 @mixin gradient-vertical-three-colors($start-color: #00b3ee, $mid-color: #7a43b6, $color-stop: 50%, $end-color: #c3325f) {
-  background-image: -webkit-linear-gradient($start-color, $mid-color $color-stop, $end-color);
-  background-image: -o-linear-gradient($start-color, $mid-color $color-stop, $end-color);
   background-image: linear-gradient($start-color, $mid-color $color-stop, $end-color);
   background-repeat: no-repeat;
-  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 and down, gets no color-stop at all for proper fallback
+  filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#{ie-hex-str($start-color)}', endColorstr='#{ie-hex-str($end-color)}', GradientType=0); // IE9 gets no color-stop at all for proper fallback
 }
 @mixin gradient-radial($inner-color: #555, $outer-color: #333) {
-  background-image: -webkit-radial-gradient(circle, $inner-color, $outer-color);
   background-image: radial-gradient(circle, $inner-color, $outer-color);
   background-repeat: no-repeat;
 }
 @mixin gradient-striped($color: rgba(255,255,255,.15), $angle: 45deg) {
-  background-image: -webkit-linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
-  background-image: -o-linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
   background-image: linear-gradient($angle, $color 25%, transparent 25%, transparent 50%, $color 50%, $color 75%, transparent 75%, transparent);
-}
+}
\ No newline at end of file
diff --git a/assets/stylesheets/bootstrap/mixins/_grid-framework.scss b/assets/stylesheets/bootstrap/mixins/_grid-framework.scss
index 16d038c..ad2060c 100644
--- a/assets/stylesheets/bootstrap/mixins/_grid-framework.scss
+++ b/assets/stylesheets/bootstrap/mixins/_grid-framework.scss
@@ -3,79 +3,44 @@
 // Used only by Bootstrap to generate the correct number of grid classes given
 // any value of `$grid-columns`.
 
-// [converter] This is defined recursively in LESS, but Sass supports real loops
-@mixin make-grid-columns($i: 1, $list: ".col-xs-#{$i}, .col-sm-#{$i}, .col-md-#{$i}, .col-lg-#{$i}") {
-  @for $i from (1 + 1) through $grid-columns {
-    $list: "#{$list}, .col-xs-#{$i}, .col-sm-#{$i}, .col-md-#{$i}, .col-lg-#{$i}";
-  }
-  #{$list} {
+@mixin make-grid-columns($columns: $grid-columns, $gutter: $grid-gutter-width, $breakpoints: $grid-breakpoints) {
+  // Common properties for all breakpoints
+  %grid-column {
     position: relative;
     // Prevent columns from collapsing when empty
     min-height: 1px;
     // Inner gutter via padding
-    padding-left:  ceil(($grid-gutter-width / 2));
-    padding-right: floor(($grid-gutter-width / 2));
-  }
-}
-
-
-// [converter] This is defined recursively in LESS, but Sass supports real loops
-@mixin float-grid-columns($class, $i: 1, $list: ".col-#{$class}-#{$i}") {
-  @for $i from (1 + 1) through $grid-columns {
-    $list: "#{$list}, .col-#{$class}-#{$i}";
-  }
-  #{$list} {
-    float: left;
-  }
-}
-
-
-@mixin calc-grid-column($index, $class, $type) {
-  @if ($type == width) and ($index > 0) {
-    .col-#{$class}-#{$index} {
-      width: percentage(($index / $grid-columns));
+    padding-left: ($gutter / 2);
+    padding-right: ($gutter / 2);
+  }
+  @each $breakpoint in map-keys($breakpoints) {
+    @for $i from 1 through $columns {
+      .col-#{$breakpoint}-#{$i} {
+        @extend %grid-column;
+      }
     }
-  }
-  @if ($type == push) and ($index > 0) {
-    .col-#{$class}-push-#{$index} {
-      left: percentage(($index / $grid-columns));
-    }
-  }
-  @if ($type == push) and ($index == 0) {
-    .col-#{$class}-push-0 {
-      left: auto;
+    @include media-breakpoint-up($breakpoint) {
+      // Work around cross-media @extend (https://github.com/sass/sass/issues/1050)
+      %grid-column-float-#{$breakpoint} {
+        @if $enable-flex {
+          // Do nothing
+        } @else {
+          float: left;
+        }
+      }
+      @for $i from 1 through $columns {
+        .col-#{$breakpoint}-#{$i} {
+          @extend %grid-column-float-#{$breakpoint};
+          @include make-col-span($i, $columns);
+        }
+      }
+      @each $modifier in (pull, push, offset) {
+        @for $i from 0 through $columns {
+          .col-#{$breakpoint}-#{$modifier}-#{$i} {
+            @include make-col-modifier($modifier, $i, $columns)
+          }
+        }
+      }
     }
   }
-  @if ($type == pull) and ($index > 0) {
-    .col-#{$class}-pull-#{$index} {
-      right: percentage(($index / $grid-columns));
-    }
-  }
-  @if ($type == pull) and ($index == 0) {
-    .col-#{$class}-pull-0 {
-      right: auto;
-    }
-  }
-  @if ($type == offset) {
-    .col-#{$class}-offset-#{$index} {
-      margin-left: percentage(($index / $grid-columns));
-    }
-  }
-}
-
-// [converter] This is defined recursively in LESS, but Sass supports real loops
-@mixin loop-grid-columns($columns, $class, $type) {
-  @for $i from 0 through $columns {
-    @include calc-grid-column($i, $class, $type);
-  }
-}
-
-
-// Create grid for specific class
-@mixin make-grid($class) {
-  @include float-grid-columns($class);
-  @include loop-grid-columns($grid-columns, $class, width);
-  @include loop-grid-columns($grid-columns, $class, pull);
-  @include loop-grid-columns($grid-columns, $class, push);
-  @include loop-grid-columns($grid-columns, $class, offset);
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_grid.scss b/assets/stylesheets/bootstrap/mixins/_grid.scss
index 0820258..56b8c6f 100644
--- a/assets/stylesheets/bootstrap/mixins/_grid.scss
+++ b/assets/stylesheets/bootstrap/mixins/_grid.scss
@@ -1,122 +1,65 @@
-// Grid system
+/// Grid system
 //
 // Generate semantic grid columns with these mixins.
 
-// Centered container element
-@mixin container-fixed($gutter: $grid-gutter-width) {
+@mixin make-container($gutter: $grid-gutter-width) {
   margin-right: auto;
   margin-left: auto;
   padding-left:  ($gutter / 2);
   padding-right: ($gutter / 2);
-  @include clearfix;
+  @include clearfix();
 }
 
-// Creates a wrapper for a series of columns
 @mixin make-row($gutter: $grid-gutter-width) {
-  margin-left:  ceil(($gutter / -2));
-  margin-right: floor(($gutter / -2));
-  @include clearfix;
-}
-
-// Generate the extra small columns
-@mixin make-xs-column($columns, $gutter: $grid-gutter-width) {
-  position: relative;
-  float: left;
-  width: percentage(($columns / $grid-columns));
-  min-height: 1px;
-  padding-left:  ($gutter / 2);
-  padding-right: ($gutter / 2);
-}
-@mixin make-xs-column-offset($columns) {
-  margin-left: percentage(($columns / $grid-columns));
-}
-@mixin make-xs-column-push($columns) {
-  left: percentage(($columns / $grid-columns));
-}
-@mixin make-xs-column-pull($columns) {
-  right: percentage(($columns / $grid-columns));
+  @if $enable-flex {
+    display: flex;
+    flex-wrap: wrap;
+  } @else {
+    @include clearfix();
+  }
+  margin-left:  ($gutter / -2);
+  margin-right: ($gutter / -2);
 }
 
-// Generate the small columns
-@mixin make-sm-column($columns, $gutter: $grid-gutter-width) {
+@mixin make-col($gutter: $grid-gutter-width) {
   position: relative;
-  min-height: 1px;
-  padding-left:  ($gutter / 2);
-  padding-right: ($gutter / 2);
-
-  @media (min-width: $screen-sm-min) {
+  @if $enable-flex {
+    // Do nothing
+  } @else {
     float: left;
-    width: percentage(($columns / $grid-columns));
   }
-}
-@mixin make-sm-column-offset($columns) {
-  @media (min-width: $screen-sm-min) {
-    margin-left: percentage(($columns / $grid-columns));
-  }
-}
-@mixin make-sm-column-push($columns) {
-  @media (min-width: $screen-sm-min) {
-    left: percentage(($columns / $grid-columns));
-  }
-}
-@mixin make-sm-column-pull($columns) {
-  @media (min-width: $screen-sm-min) {
-    right: percentage(($columns / $grid-columns));
-  }
-}
-
-// Generate the medium columns
-@mixin make-md-column($columns, $gutter: $grid-gutter-width) {
-  position: relative;
   min-height: 1px;
   padding-left:  ($gutter / 2);
   padding-right: ($gutter / 2);
-
-  @media (min-width: $screen-md-min) {
-    float: left;
-    width: percentage(($columns / $grid-columns));
-  }
-}
-@mixin make-md-column-offset($columns) {
-  @media (min-width: $screen-md-min) {
-    margin-left: percentage(($columns / $grid-columns));
-  }
 }
-@mixin make-md-column-push($columns) {
-  @media (min-width: $screen-md-min) {
-    left: percentage(($columns / $grid-columns));
-  }
-}
-@mixin make-md-column-pull($columns) {
-  @media (min-width: $screen-md-min) {
-    right: percentage(($columns / $grid-columns));
+
+@mixin make-col-span($size, $columns: $grid-columns) {
+  @if $enable-flex {
+    flex: 0 0 percentage($size / $columns);
+  } @else {
+    width: percentage($size / $columns);
   }
 }
 
-// Generate the large columns
-@mixin make-lg-column($columns, $gutter: $grid-gutter-width) {
-  position: relative;
-  min-height: 1px;
-  padding-left:  ($gutter / 2);
-  padding-right: ($gutter / 2);
-
-  @media (min-width: $screen-lg-min) {
-    float: left;
-    width: percentage(($columns / $grid-columns));
-  }
+@mixin make-col-offset($size, $columns: $grid-columns) {
+  margin-left: percentage($size / $columns);
 }
-@mixin make-lg-column-offset($columns) {
-  @media (min-width: $screen-lg-min) {
-    margin-left: percentage(($columns / $grid-columns));
-  }
+
+@mixin make-col-push($size, $columns: $grid-columns) {
+  left: if($size > 0, percentage($size / $columns), auto);
 }
-@mixin make-lg-column-push($columns) {
-  @media (min-width: $screen-lg-min) {
-    left: percentage(($columns / $grid-columns));
-  }
+
+@mixin make-col-pull($size, $columns: $grid-columns) {
+  right: if($size > 0, percentage($size / $columns), auto);
 }
-@mixin make-lg-column-pull($columns) {
-  @media (min-width: $screen-lg-min) {
-    right: percentage(($columns / $grid-columns));
+
+@mixin make-col-modifier($type, $size, $columns) {
+  // Work around the lack of dynamic mixin @include support (https://github.com/sass/sass/issues/626)
+  @if $type == push {
+    @include make-col-push($size, $columns);
+  } @else if $type == pull {
+    @include make-col-pull($size, $columns);
+  } @else if $type == offset {
+    @include make-col-offset($size, $columns);
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_hide-text.scss b/assets/stylesheets/bootstrap/mixins/_hide-text.scss
index cd17cba..daed5fb 100644
--- a/assets/stylesheets/bootstrap/mixins/_hide-text.scss
+++ b/assets/stylesheets/bootstrap/mixins/_hide-text.scss
@@ -1,21 +1,8 @@
 // CSS image replacement
-//
-// Heads up! v3 launched with only `.hide-text()`, but per our pattern for
-// mixins being reused as classes with the same name, this doesn't hold up. As
-// of v3.0.1 we have added `.text-hide()` and deprecated `.hide-text()`.
-//
-// Source: https://github.com/h5bp/html5-boilerplate/commit/aa0396eae757
-
-// Deprecated as of v3.0.1 (will be removed in v4)
-@mixin hide-text() {
-  font: 0/0 a;
+@mixin text-hide() {
+  font: "0/0" a;
   color: transparent;
   text-shadow: none;
   background-color: transparent;
   border: 0;
 }
-
-// New mixin to use as of v3.0.1
-@mixin text-hide() {
-  @include hide-text;
-}
diff --git a/assets/stylesheets/bootstrap/mixins/_hover.scss b/assets/stylesheets/bootstrap/mixins/_hover.scss
new file mode 100644
index 0000000..3a11254
--- /dev/null
+++ b/assets/stylesheets/bootstrap/mixins/_hover.scss
@@ -0,0 +1,59 @@
+@mixin hover {
+  @if $enable-hover-media-query {
+    // See Media Queries Level 4: http://drafts.csswg.org/mediaqueries/#hover
+    // Currently shimmed by https://github.com/twbs/mq4-hover-shim
+    @media (hover: hover) {
+      &:hover { @content }
+    }
+  }
+  @else {
+    &:hover { @content }
+  }
+}
+
+@mixin hover-focus {
+  @if $enable-hover-media-query {
+    &:focus { @content }
+    @include hover { @content }
+  }
+  @else {
+    &:focus,
+    &:hover {
+      @content
+    }
+  }
+}
+
+@mixin plain-hover-focus {
+  @if $enable-hover-media-query {
+    &,
+    &:focus {
+      @content
+    }
+    @include hover { @content }
+  }
+  @else {
+    &,
+    &:focus,
+    &:hover {
+      @content
+    }
+  }
+}
+
+@mixin hover-focus-active {
+  @if $enable-hover-media-query {
+    &:focus,
+    &:active {
+      @content
+    }
+    @include hover { @content }
+  }
+  @else {
+    &:focus,
+    &:active,
+    &:hover {
+      @content
+    }
+  }
+}
diff --git a/assets/stylesheets/bootstrap/mixins/_image.scss b/assets/stylesheets/bootstrap/mixins/_image.scss
index c8dcf5e..bec9626 100644
--- a/assets/stylesheets/bootstrap/mixins/_image.scss
+++ b/assets/stylesheets/bootstrap/mixins/_image.scss
@@ -6,6 +6,7 @@
 // Responsive image
 //
 // Keep images from scaling beyond the width of their parents.
+
 @mixin img-responsive($display: block) {
   display: $display;
   max-width: 100%; // Part 1: Set a maximum relative to the parent
@@ -15,19 +16,18 @@
 
 // Retina image
 //
-// Short retina mixin for setting background-image and -size. Note that the
-// spelling of `min--moz-device-pixel-ratio` is intentional.
+// Short retina mixin for setting background-image and -size.
+
 @mixin img-retina($file-1x, $file-2x, $width-1x, $height-1x) {
-  background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-1x}"), "#{$file-1x}"));
+  background-image: url("#{file-1x}");
 
   @media
   only screen and (-webkit-min-device-pixel-ratio: 2),
-  only screen and (   min--moz-device-pixel-ratio: 2),
   only screen and (     -o-min-device-pixel-ratio: 2/1),
   only screen and (        min-device-pixel-ratio: 2),
   only screen and (                min-resolution: 192dpi),
   only screen and (                min-resolution: 2dppx) {
-    background-image: url(if($bootstrap-sass-asset-helper, twbs-image-path("#{$file-2x}"), "#{$file-2x}"));
+    background-image: url("#{file-2x}");
     background-size: $width-1x $height-1x;
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_labels.scss b/assets/stylesheets/bootstrap/mixins/_label.scss
index eda6dfd..4bc48c6 100644
--- a/assets/stylesheets/bootstrap/mixins/_labels.scss
+++ b/assets/stylesheets/bootstrap/mixins/_label.scss
@@ -4,8 +4,7 @@
   background-color: $color;
 
   &[href] {
-    &:hover,
-    &:focus {
+    @include hover-focus {
       background-color: darken($color, 10%);
     }
   }
diff --git a/assets/stylesheets/bootstrap/mixins/_list-group.scss b/assets/stylesheets/bootstrap/mixins/_list-group.scss
index c478eeb..a40dda9 100644
--- a/assets/stylesheets/bootstrap/mixins/_list-group.scss
+++ b/assets/stylesheets/bootstrap/mixins/_list-group.scss
@@ -1,32 +1,30 @@
 // List Groups
 
 @mixin list-group-item-variant($state, $background, $color) {
-  .list-group-item-#{$state} {
+  .list-group-item-#{state} {
     color: $color;
     background-color: $background;
-
-    // [converter] extracted a&, button& to a.list-group-item-#{$state}, button.list-group-item-#{$state}
   }
 
-  a.list-group-item-#{$state},
-  button.list-group-item-#{$state} {
+  a.list-group-item-#{state},
+  button.list-group-item-#{state} {
     color: $color;
 
     .list-group-item-heading {
       color: inherit;
     }
 
-    &:hover,
-    &:focus {
+    @include hover-focus {
       color: $color;
       background-color: darken($background, 5%);
     }
-    &.active,
-    &.active:hover,
-    &.active:focus {
-      color: #fff;
-      background-color: $color;
-      border-color: $color;
+
+    &.active {
+      @include plain-hover-focus {
+        color: #fff;
+        background-color: $color;
+        border-color: $color;
+      }
     }
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_nav-divider.scss b/assets/stylesheets/bootstrap/mixins/_nav-divider.scss
index 2e6da02..fb3d12e 100644
--- a/assets/stylesheets/bootstrap/mixins/_nav-divider.scss
+++ b/assets/stylesheets/bootstrap/mixins/_nav-divider.scss
@@ -4,7 +4,7 @@
 
 @mixin nav-divider($color: #e5e5e5) {
   height: 1px;
-  margin: (($line-height-computed / 2) - 1) 0;
+  margin: ($spacer-y / 2) 0;
   overflow: hidden;
   background-color: $color;
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_nav-vertical-align.scss b/assets/stylesheets/bootstrap/mixins/_navbar-align.scss
index c8fbf1a..c454a4f 100644
--- a/assets/stylesheets/bootstrap/mixins/_nav-vertical-align.scss
+++ b/assets/stylesheets/bootstrap/mixins/_navbar-align.scss
@@ -3,7 +3,7 @@
 // Vertically center elements in the navbar.
 // Example: an element has a height of 30px, so write out `.navbar-vertical-align(30px);` to calculate the appropriate top margin.
 
-@mixin navbar-vertical-align($element-height) {
-  margin-top: (($navbar-height - $element-height) / 2);
-  margin-bottom: (($navbar-height - $element-height) / 2);
-}
+// @mixin navbar-vertical-align($element-height) {
+//   margin-top: (($navbar-height - $element-height) / 2);
+//   margin-bottom: (($navbar-height - $element-height) / 2);
+// }
diff --git a/assets/stylesheets/bootstrap/mixins/_opacity.scss b/assets/stylesheets/bootstrap/mixins/_opacity.scss
deleted file mode 100644
index 88e9a57..0000000
--- a/assets/stylesheets/bootstrap/mixins/_opacity.scss
+++ /dev/null
@@ -1,8 +0,0 @@
-// Opacity
-
-@mixin opacity($opacity) {
-  opacity: $opacity;
-  // IE8 filter
-  $opacity-ie: ($opacity * 100);
-  filter: alpha(opacity=$opacity-ie);
-}
diff --git a/assets/stylesheets/bootstrap/mixins/_panels.scss b/assets/stylesheets/bootstrap/mixins/_panels.scss
deleted file mode 100644
index 3ff31ae..0000000
--- a/assets/stylesheets/bootstrap/mixins/_panels.scss
+++ /dev/null
@@ -1,24 +0,0 @@
-// Panels
-
-@mixin panel-variant($border, $heading-text-color, $heading-bg-color, $heading-border) {
-  border-color: $border;
-
-  & > .panel-heading {
-    color: $heading-text-color;
-    background-color: $heading-bg-color;
-    border-color: $heading-border;
-
-    + .panel-collapse > .panel-body {
-      border-top-color: $border;
-    }
-    .badge {
-      color: $heading-bg-color;
-      background-color: $heading-text-color;
-    }
-  }
-  & > .panel-footer {
-    + .panel-collapse > .panel-body {
-      border-bottom-color: $border;
-    }
-  }
-}
diff --git a/assets/stylesheets/bootstrap/mixins/_progress-bar.scss b/assets/stylesheets/bootstrap/mixins/_progress-bar.scss
deleted file mode 100644
index 90a62af..0000000
--- a/assets/stylesheets/bootstrap/mixins/_progress-bar.scss
+++ /dev/null
@@ -1,10 +0,0 @@
-// Progress bars
-
-@mixin progress-bar-variant($color) {
-  background-color: $color;
-
-  // Deprecated parent class requirement as of v3.2.0
-  .progress-striped & {
-    @include gradient-striped;
-  }
-}
diff --git a/assets/stylesheets/bootstrap/mixins/_progress.scss b/assets/stylesheets/bootstrap/mixins/_progress.scss
new file mode 100644
index 0000000..802e179
--- /dev/null
+++ b/assets/stylesheets/bootstrap/mixins/_progress.scss
@@ -0,0 +1,17 @@
+// Progress bars
+
+@mixin progress-variant($color) {
+  &[value]::-webkit-progress-value {
+    background-color: $color;
+  }
+
+  &[value]::-moz-progress-bar {
+    background-color: $color;
+  }
+
+  @media screen and (min-width:0\0) {
+    .progress-bar {
+      background-color: $color;
+    }
+  }
+}
diff --git a/assets/stylesheets/bootstrap/mixins/_pulls.scss b/assets/stylesheets/bootstrap/mixins/_pulls.scss
new file mode 100644
index 0000000..6bdff02
--- /dev/null
+++ b/assets/stylesheets/bootstrap/mixins/_pulls.scss
@@ -0,0 +1,6 @@
+@mixin pull-left {
+  float: left !important;
+}
+@mixin pull-right {
+  float: right !important;
+}
diff --git a/assets/stylesheets/bootstrap/mixins/_reset-filter.scss b/assets/stylesheets/bootstrap/mixins/_reset-filter.scss
index bf73051..044b349 100644
--- a/assets/stylesheets/bootstrap/mixins/_reset-filter.scss
+++ b/assets/stylesheets/bootstrap/mixins/_reset-filter.scss
@@ -1,8 +1,8 @@
 // Reset filters for IE
 //
 // When you need to remove a gradient background, do not forget to use this to reset
-// the IE filter for IE9 and below.
+// the IE filter for IE9.
 
 @mixin reset-filter() {
-  filter: progid:DXImageTransform.Microsoft.gradient(enabled = false);
+  filter: "progid:DXImageTransform.Microsoft.gradient(enabled = false)";
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_reset-text.scss b/assets/stylesheets/bootstrap/mixins/_reset-text.scss
index c9c2841..014dff5 100644
--- a/assets/stylesheets/bootstrap/mixins/_reset-text.scss
+++ b/assets/stylesheets/bootstrap/mixins/_reset-text.scss
@@ -1,11 +1,11 @@
-@mixin reset-text() {
+@mixin reset-text {
   font-family: $font-family-base;
   // We deliberately do NOT reset font-size.
   font-style: normal;
   font-weight: normal;
   letter-spacing: normal;
   line-break: auto;
-  line-height: $line-height-base;
+  line-height: $line-height;
   text-align: left; // Fallback for where `start` is not supported
   text-align: start;
   text-decoration: none;
diff --git a/assets/stylesheets/bootstrap/mixins/_screen-reader.scss b/assets/stylesheets/bootstrap/mixins/_screen-reader.scss
new file mode 100644
index 0000000..e52b282
--- /dev/null
+++ b/assets/stylesheets/bootstrap/mixins/_screen-reader.scss
@@ -0,0 +1,32 @@
+// Only display content to screen readers
+//
+// See: http://a11yproject.com/posts/how-to-hide-content/
+
+@mixin sr-only {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0,0,0,0);
+  border: 0;
+}
+
+// Use in conjunction with .sr-only to only display content when it's focused.
+//
+// Useful for "Skip to main content" links; see http://www.w3.org/TR/2013/NOTE-WCAG20-TECHS-20130905/G1
+//
+// Credit: HTML5 Boilerplate
+
+@mixin sr-only-focusable {
+  &:active,
+  &:focus {
+    position: static;
+    width: auto;
+    height: auto;
+    margin: 0;
+    overflow: visible;
+    clip: auto;
+  }
+}
diff --git a/assets/stylesheets/bootstrap/mixins/_table-row.scss b/assets/stylesheets/bootstrap/mixins/_table-row.scss
index 1367950..84f1d30 100644
--- a/assets/stylesheets/bootstrap/mixins/_table-row.scss
+++ b/assets/stylesheets/bootstrap/mixins/_table-row.scss
@@ -3,26 +3,28 @@
 @mixin table-row-variant($state, $background) {
   // Exact selectors below required to override `.table-striped` and prevent
   // inheritance to nested tables.
-  .table > thead > tr,
-  .table > tbody > tr,
-  .table > tfoot > tr {
-    > td.#{$state},
-    > th.#{$state},
-    &.#{$state} > td,
-    &.#{$state} > th {
+  .table-#{$state} {
+    &,
+    > th,
+    > td {
       background-color: $background;
     }
   }
 
   // Hover states for `.table-hover`
   // Note: this is not available for cells or rows within `thead` or `tfoot`.
-  .table-hover > tbody > tr {
-    > td.#{$state}:hover,
-    > th.#{$state}:hover,
-    &.#{$state}:hover > td,
-    &:hover > .#{$state},
-    &.#{$state}:hover > th {
-      background-color: darken($background, 5%);
+  .table-hover {
+    $hover-background: darken($background, 5%);
+
+    .table-#{$state} {
+      @include hover {
+        background-color: $hover-background;
+
+        > td,
+        > th {
+          background-color: $hover-background;
+        }
+      }
     }
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_text-emphasis.scss b/assets/stylesheets/bootstrap/mixins/_text-emphasis.scss
index 3b446c4..0a6428e 100644
--- a/assets/stylesheets/bootstrap/mixins/_text-emphasis.scss
+++ b/assets/stylesheets/bootstrap/mixins/_text-emphasis.scss
@@ -1,12 +1,12 @@
 // Typography
 
-// [converter] $parent hack
 @mixin text-emphasis-variant($parent, $color) {
   #{$parent} {
     color: $color;
   }
-  a#{$parent}:hover,
-  a#{$parent}:focus {
-    color: darken($color, 10%);
+  a#{$parent} {
+    @include hover-focus {
+      color: darken($color, 10%);
+    }
   }
 }
diff --git a/assets/stylesheets/bootstrap/mixins/_text-overflow.scss b/assets/stylesheets/bootstrap/mixins/_text-truncate.scss
index 1593b25..5a40bf5 100644
--- a/assets/stylesheets/bootstrap/mixins/_text-overflow.scss
+++ b/assets/stylesheets/bootstrap/mixins/_text-truncate.scss
@@ -1,8 +1,8 @@
-// Text overflow
+// Text truncate
 // Requires inline-block or block for proper styling
 
-@mixin text-overflow() {
+@mixin text-truncate() {
   overflow: hidden;
   text-overflow: ellipsis;
   white-space: nowrap;
-}
+}
\ No newline at end of file
diff --git a/assets/stylesheets/bootstrap/mixins/_vendor-prefixes.scss b/assets/stylesheets/bootstrap/mixins/_vendor-prefixes.scss
deleted file mode 100644
index df4c1ec..0000000
--- a/assets/stylesheets/bootstrap/mixins/_vendor-prefixes.scss
+++ /dev/null
@@ -1,222 +0,0 @@
-// Vendor Prefixes
-//
-// All vendor mixins are deprecated as of v3.2.0 due to the introduction of
-// Autoprefixer in our Gruntfile. They will be removed in v4.
-
-// - Animations
-// - Backface visibility
-// - Box shadow
-// - Box sizing
-// - Content columns
-// - Hyphens
-// - Placeholder text
-// - Transformations
-// - Transitions
-// - User Select
-
-
-// Animations
-@mixin animation($animation) {
-  -webkit-animation: $animation;
-       -o-animation: $animation;
-          animation: $animation;
-}
-@mixin animation-name($name) {
-  -webkit-animation-name: $name;
-          animation-name: $name;
-}
-@mixin animation-duration($duration) {
-  -webkit-animation-duration: $duration;
-          animation-duration: $duration;
-}
-@mixin animation-timing-function($timing-function) {
-  -webkit-animation-timing-function: $timing-function;
-          animation-timing-function: $timing-function;
-}
-@mixin animation-delay($delay) {
-  -webkit-animation-delay: $delay;
-          animation-delay: $delay;
-}
-@mixin animation-iteration-count($iteration-count) {
-  -webkit-animation-iteration-count: $iteration-count;
-          animation-iteration-count: $iteration-count;
-}
-@mixin animation-direction($direction) {
-  -webkit-animation-direction: $direction;
-          animation-direction: $direction;
-}
-@mixin animation-fill-mode($fill-mode) {
-  -webkit-animation-fill-mode: $fill-mode;
-          animation-fill-mode: $fill-mode;
-}
-
-// Backface visibility
-// Prevent browsers from flickering when using CSS 3D transforms.
-// Default value is `visible`, but can be changed to `hidden`
-
-@mixin backface-visibility($visibility){
-  -webkit-backface-visibility: $visibility;
-     -moz-backface-visibility: $visibility;
-          backface-visibility: $visibility;
-}
-
-// Drop shadows
-//
-// Note: Deprecated `.box-shadow()` as of v3.1.0 since all of Bootstrap's
-// supported browsers that have box shadow capabilities now support it.
-
-@mixin box-shadow($shadow...) {
-  -webkit-box-shadow: $shadow; // iOS <4.3 & Android <4.1
-          box-shadow: $shadow;
-}
-
-// Box sizing
-@mixin box-sizing($boxmodel) {
-  -webkit-box-sizing: $boxmodel;
-     -moz-box-sizing: $boxmodel;
-          box-sizing: $boxmodel;
-}
-
-// CSS3 Content Columns
-@mixin content-columns($column-count, $column-gap: $grid-gutter-width) {
-  -webkit-column-count: $column-count;
-     -moz-column-count: $column-count;
-          column-count: $column-count;
-  -webkit-column-gap: $column-gap;
-     -moz-column-gap: $column-gap;
-          column-gap: $column-gap;
-}
-
-// Optional hyphenation
-@mixin hyphens($mode: auto) {
-  word-wrap: break-word;
-  -webkit-hyphens: $mode;
-     -moz-hyphens: $mode;
-      -ms-hyphens: $mode; // IE10+
-       -o-hyphens: $mode;
-          hyphens: $mode;
-}
-
-// Placeholder text
-@mixin placeholder($color: $input-color-placeholder) {
-  // Firefox
-  &::-moz-placeholder {
-    color: $color;
-    opacity: 1; // Override Firefox's unusual default opacity; see https://github.com/twbs/bootstrap/pull/11526
-  }
-  &:-ms-input-placeholder { color: $color; } // Internet Explorer 10+
-  &::-webkit-input-placeholder  { color: $color; } // Safari and Chrome
-}
-
-// Transformations
-@mixin scale($ratio...) {
-  -webkit-transform: scale($ratio);
-      -ms-transform: scale($ratio); // IE9 only
-       -o-transform: scale($ratio);
-          transform: scale($ratio);
-}
-
-@mixin scaleX($ratio) {
-  -webkit-transform: scaleX($ratio);
-      -ms-transform: scaleX($ratio); // IE9 only
-       -o-transform: scaleX($ratio);
-          transform: scaleX($ratio);
-}
-@mixin scaleY($ratio) {
-  -webkit-transform: scaleY($ratio);
-      -ms-transform: scaleY($ratio); // IE9 only
-       -o-transform: scaleY($ratio);
-          transform: scaleY($ratio);
-}
-@mixin skew($x, $y) {
-  -webkit-transform: skewX($x) skewY($y);
-      -ms-transform: skewX($x) skewY($y); // See https://github.com/twbs/bootstrap/issues/4885; IE9+
-       -o-transform: skewX($x) skewY($y);
-          transform: skewX($x) skewY($y);
-}
-@mixin translate($x, $y) {
-  -webkit-transform: translate($x, $y);
-      -ms-transform: translate($x, $y); // IE9 only
-       -o-transform: translate($x, $y);
-          transform: translate($x, $y);
-}
-@mixin translate3d($x, $y, $z) {
-  -webkit-transform: translate3d($x, $y, $z);
-          transform: translate3d($x, $y, $z);
-}
-@mixin rotate($degrees) {
-  -webkit-transform: rotate($degrees);
-      -ms-transform: rotate($degrees); // IE9 only
-       -o-transform: rotate($degrees);
-          transform: rotate($degrees);
-}
-@mixin rotateX($degrees) {
-  -webkit-transform: rotateX($degrees);
-      -ms-transform: rotateX($degrees); // IE9 only
-       -o-transform: rotateX($degrees);
-          transform: rotateX($degrees);
-}
-@mixin rotateY($degrees) {
-  -webkit-transform: rotateY($degrees);
-      -ms-transform: rotateY($degrees); // IE9 only
-       -o-transform: rotateY($degrees);
-          transform: rotateY($degrees);
-}
-@mixin perspective($perspective) {
-  -webkit-perspective: $perspective;
-     -moz-perspective: $perspective;
-          perspective: $perspective;
-}
-@mixin perspective-origin($perspective) {
-  -webkit-perspective-origin: $perspective;
-     -moz-perspective-origin: $perspective;
-          perspective-origin: $perspective;
-}
-@mixin transform-origin($origin) {
-  -webkit-transform-origin: $origin;
-     -moz-transform-origin: $origin;
-      -ms-transform-origin: $origin; // IE9 only
-          transform-origin: $origin;
-}
-
-
-// Transitions
-
-@mixin transition($transition...) {
-  -webkit-transition: $transition;
-       -o-transition: $transition;
-          transition: $transition;
-}
-@mixin transition-property($transition-property...) {
-  -webkit-transition-property: $transition-property;
-          transition-property: $transition-property;
-}
-@mixin transition-delay($transition-delay) {
-  -webkit-transition-delay: $transition-delay;
-          transition-delay: $transition-delay;
-}
-@mixin transition-duration($transition-duration...) {
-  -webkit-transition-duration: $transition-duration;
-          transition-duration: $transition-duration;
-}
-@mixin transition-timing-function($timing-function) {
-  -webkit-transition-timing-function: $timing-function;
-          transition-timing-function: $timing-function;
-}
-@mixin transition-transform($transition...) {
-  -webkit-transition: -webkit-transform $transition;
-     -moz-transition: -moz-transform $transition;
-       -o-transition: -o-transform $transition;
-          transition: transform $transition;
-}
-
-
-// User select
-// For selecting text on the page
-
-@mixin user-select($select) {
-  -webkit-user-select: $select;
-     -moz-user-select: $select;
-      -ms-user-select: $select; // IE10+
-          user-select: $select;
-}