Merge branch 'master' into further-social-icons

18 files changed, 203 insertions, 63 deletions

diff --git a/README.md b/README.md
index 26fe826..433bcdb 100644
--- a/README.md
+++ b/README.md
@@ -110,6 +110,8 @@ If you *don't* have the section `[Params.staticman]` in `config.toml`, you *won'
 
 To add Google Analytics, simply sign up to [Google Analytics](https://www.google.com/analytics/) to obtain your Google Tracking ID, and add this tracking ID to the `googleAnalytics` parameter in `config.toml`.
 
+Note that the Google Analytics tracking code will only be inserted into the page when the site isn't served on Hugo's built-in server, to prevent tracking from local testing environments.
+
 ### Commit SHA on the footer
 
 If the source of your site is in a Git repo, the SHA corresponding to the commit the site is built from can be shown on the footer. To do so, two site parameters `commit` has to be defined in the config file `config.toml`:
@@ -172,7 +174,7 @@ This adds a two column side-by-side environment (will turn into 1 col for narrow
 This is column 1.
 {{< column >}}
 This is column 2.
-{{< endcolumn >}}
+{{< endcolumns >}}
 ```
 
 ## About
diff --git a/data/beautifulhugo/social.toml b/data/beautifulhugo/social.toml
index d3428af..7f1daf0 100644
--- a/data/beautifulhugo/social.toml
+++ b/data/beautifulhugo/social.toml
@@ -153,6 +153,7 @@ id = "mastodon"
 url = "https://%s"
 title = "Mastodon"
 icon = "fab fa-mastodon"
+rel = "me"
 
 [[social_icons]]
 id = "weibo"
@@ -161,7 +162,13 @@ title = "Weibo"
 icon = "fab fa-weibo"
 
 [[social_icons]]
+id = "discord"
+url = "https://discord.gg/%s"
+title = "Discord"
+icon = "fab fa-discord"
+
+[[social_icons]]
 id = "strava"
 url = "https://www.strava.com/athletes/%s"
 title = "Strava"
-icon = "fab fa-strava"
\ No newline at end of file
+icon = "fab fa-strava"
diff --git a/exampleSite/config.toml b/exampleSite/config.toml
index 8ae24f7..08c86aa 100644
--- a/exampleSite/config.toml
+++ b/exampleSite/config.toml
@@ -73,6 +73,7 @@ pygmentsCodefencesGuessSyntax = true
   kaggle = "username"
   weibo = "username"
   slack = "username"
+  discord = "invite code (https://discord.gg/XXXXXXX)"
   strava = "userid"
 
 [[menu.main]]
diff --git a/i18n/en.yaml b/i18n/en.yaml
index eee2c8a..3ffec36 100644
--- a/i18n/en.yaml
+++ b/i18n/en.yaml
@@ -61,7 +61,7 @@
 - id: yourEmail
   translation: "Your email address"
 - id: yourWebsite
-  translation: "You website"
+  translation: "Your website"
 
 # Delayed Disqus
 - id: show
diff --git a/i18n/fr.yaml b/i18n/fr.yaml
index 4b68667..cc9278f 100644
--- a/i18n/fr.yaml
+++ b/i18n/fr.yaml
@@ -1,18 +1,18 @@
 # Content
 - id: dateFormat
-  translation: "January 2, 2006"
+  translation: "2·01·2006"
 - id: shortdateFormat
-  translation: "2 Jan, 2006 15:04:05"
+  translation: "2·01·2006 - 15:04:05"
 - id: postedOnDate
-  translation: "Posté le {{ . }}"
+  translation: "Publié le {{ . }}"
 - id: lastModified
-  translation: "(Dernière modification le {{ . }})"
+  translation: "(Mise à jour le {{ . }})"
 - id: translationsLabel
-  translation: "Autres langues : "
+  translation: "Traductions : "
 - id: translationsSeparator
   translation: ", "
 - id: readMore
-  translation: "Voir plus"
+  translation: "Lire"
 - id: olderPosts
   translation: "Anciens posts"
 - id: newerPosts
@@ -37,7 +37,7 @@
 
 # Navigation
 - id: toggleNavigation
-  translation: "Toggle navigation"
+  translation: "Activer la navigation"
 - id: languageSwitcherLabel
   translation: "Langue"
 - id: gcseLabelShort
@@ -55,13 +55,15 @@
 - id: moreComment
   translation: "commentaires"
 - id: useMarkdown
-  translation: "Vous pouvez utiliser la syntaxe Markdown"
+  translation: "Rédigez votre commentaire ici. (Vous pouvez utiliser la syntaxe Markdown)"
 - id: yourName
   translation: "Votre nom"
 - id: yourEmail
-  translation: "Votre addresse mail"
+  translation: "Votre adresse mail"
 - id: yourWebsite
   translation: "Votre site web"
+- id: sendComment
+  translation: "Envoyer"
 
 # Delayed Disqus
 - id: show
@@ -71,4 +73,4 @@
 
 # Related posts
 - id: seeAlso
-  translation: "Voir également"
+  translation: "Suggestions de lecture :"
diff --git a/i18n/it.yaml b/i18n/it.yaml
index c863da6..09f7313 100644
--- a/i18n/it.yaml
+++ b/i18n/it.yaml
@@ -4,7 +4,7 @@
 - id: shortdateFormat
   translation: "2 Jan 2006 15:04:05"
 - id: postedOnDate
-  translation: "Redatto il {{ . }}"
+  translation: "Pubblicato il {{ . }}"
 - id: lastModified
   translation: "(Ultima modifica il {{ . }})"
 - id: translationsLabel
@@ -37,9 +37,9 @@
 
 # Navigation
 - id: toggleNavigation
-  translation: "Attiva/disattiva la navigazione"
+  translation: "Menu"
 - id: languageSwitcherLabel
-  translation: "Linguaggio"
+  translation: "Lingua"
 - id: gcseLabelShort
   translation: "Cerca"
 - id: gcseLabelLong
@@ -71,4 +71,4 @@
 
 # Related posts
 - id: seeAlso
-  translation: "Guarda anche"
+  translation: "Vedi anche"
diff --git a/layouts/partials/footer.html b/layouts/partials/footer.html
index 8b48793..87f6a1e 100644
--- a/layouts/partials/footer.html
+++ b/layouts/partials/footer.html
@@ -9,7 +9,7 @@
           {{ range .Site.Data.beautifulhugo.social.social_icons }}
             {{- if isset $.Site.Author .id }}
               <li>
-                <a href="{{ printf .url (index $.Site.Author .id) }}" title="{{ .title }}">
+                <a {{ if .rel }}rel="{{ .rel }}"{{- end -}} href="{{ printf .url (index $.Site.Author .id) }}" title="{{ .title }}">
                   <span class="fa-stack fa-lg">
                     <i class="fas fa-circle fa-stack-2x"></i>
                     <i class="{{ .icon }} fa-stack-1x fa-inverse"></i>
@@ -63,12 +63,12 @@
 {{- if .Site.Params.selfHosted -}}
 <script src="{{ "js/katex.min.js" | absURL }}"></script>
 <script src="{{ "js/auto-render.min.js" | absURL }}"></script>
-<script src="{{ "js/jquery.min.js" | absURL }}"></script>
+<script src="{{ "js/jquery-3.5.1.slim.min.js" | absURL }}"></script>
 <script src="{{ "js/bootstrap.min.js" | absURL }}"></script>
 {{- else -}}
-<script src="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.10.0/katex.min.js" integrity="sha384-K3vbOmF2BtaVai+Qk37uypf7VrgBubhQreNQe9aGsz9lB63dIFiQVlJbr92dw2Lx" crossorigin="anonymous"></script>
-<script src="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.10.0/contrib/auto-render.min.js" integrity="sha384-kmZOZB5ObwgQnS/DuDg6TScgOiWWBiVt0plIRkZCmE6rDZGrEOQeHM5PcHi+nyqe" crossorigin="anonymous"></script>
-<script src="https://code.jquery.com/jquery-1.12.4.min.js" integrity="sha256-ZosEbRLbNQzLpnKIkEdrPv7lOy9C27hHQ+Xp8a4MxAQ=" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.js" integrity="sha384-g7c+Jr9ZivxKLnZTDUhnkOnsh30B4H0rpLUpJ4jAIKs4fnJI+sEnkvrMWph2EDg4" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/contrib/auto-render.min.js" integrity="sha384-mll67QQFJfxn0IYznZYonOWZ644AWYC+Pt2cHqMaRhXVrursRwvLnLaebdGIlYNa" crossorigin="anonymous"></script>
+<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js" integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj" crossorigin="anonymous"></script>
 <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
 {{- end }}
 
diff --git a/layouts/partials/head.html b/layouts/partials/head.html
index 83ace10..a0259bd 100644
--- a/layouts/partials/head.html
+++ b/layouts/partials/head.html
@@ -50,7 +50,7 @@
   <link rel="stylesheet" href="{{ "fontawesome/css/all.css" | absURL }}" />
   <link rel="stylesheet" href="{{ "css/bootstrap.min.css" | absURL }}" />
   {{- else -}}
-  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.10.0/katex.min.css" integrity="sha384-9eLZqc9ds8eNjO3TmqPeYcDj8n+Qfa4nuSiGYa6DjLNcv9BtN69ZIulL9+8CqC9Y" crossorigin="anonymous">
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/katex@0.12.0/dist/katex.min.css" integrity="sha384-AfEj0r4/OFrOo5t7NnNe46zW/tFgW6x/bCJG8FqQCEo3+Aro6EYUG4+cU+KJWu/X" crossorigin="anonymous">
   <link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.5.0/css/all.css" integrity="sha384-B4dIYHKNBt8Bc12p+WXckhzcICo0wtJAoU8YZTY5qE0Id1GSseTk6S+L3BlXeVIU" crossorigin="anonymous">
   <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
   {{- end -}}
@@ -88,4 +88,6 @@
   {{- end -}}
 
 {{- partial "head_custom.html" . }}
-{{ template "_internal/google_analytics_async.html" . }}
+{{- if not .Site.IsServer -}}
+  {{ template "_internal/google_analytics_async.html" . }}
+{{- end -}}
\ No newline at end of file
diff --git a/layouts/partials/header.html b/layouts/partials/header.html
index 2182534..b6c4c4d 100644
--- a/layouts/partials/header.html
+++ b/layouts/partials/header.html
@@ -53,6 +53,7 @@
         <span class="img-desc" style="display: inline;"></span>
       </div>
     {{end}}
+    {{ if $title }}
     <div class="intro-header no-img">
       <div class="container">
         <div class="row">
@@ -81,6 +82,7 @@
         </div>
       </div>
     </div>
+  {{ end }}
   </header>
 {{ else }}
   <div class="intro-header"></div>
diff --git a/layouts/partials/seo/twitter.html b/layouts/partials/seo/twitter.html
index 0eb1e9b..5f13317 100644
--- a/layouts/partials/seo/twitter.html
+++ b/layouts/partials/seo/twitter.html
@@ -7,7 +7,7 @@
 {{- with .Params.share_img | default .Params.image | default .Site.Params.logo }}
   <meta name="twitter:image" content="{{ . | absURL }}" />
 {{- end }}
-  <meta name="twitter:card" content="summary" />
+  <meta name="twitter:card" content="summary_large_image" />
 {{- with .Site.Author.twitter }}
   <meta name="twitter:site" content="@{{ . }}" />
   <meta name="twitter:creator" content="@{{ . }}" />
diff --git a/static/css/codeblock.css b/static/css/codeblock.css
index cf80033..4481eed 100644
--- a/static/css/codeblock.css
+++ b/static/css/codeblock.css
@@ -30,4 +30,4 @@ pre code.hljs {
 
 .highlight td:last-child pre code, .highlight pre code {
   white-space: pre;
-}
\ No newline at end of file
+}
diff --git a/static/css/katex.min.css b/static/css/katex.min.css
index d6fb837..98b7c7b 100644
--- a/static/css/katex.min.css
+++ b/static/css/katex.min.css
@@ -1 +1 @@
-@font-face{font-family:KaTeX_AMS;src:url(fonts/KaTeX_AMS-Regular.eot);src:url(fonts/KaTeX_AMS-Regular.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_AMS-Regular.woff2) format('woff2'),url(fonts/KaTeX_AMS-Regular.woff) format('woff'),url(fonts/KaTeX_AMS-Regular.ttf) format('truetype');font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Caligraphic;src:url(fonts/KaTeX_Caligraphic-Bold.eot);src:url(fonts/KaTeX_Caligraphic-Bold.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Caligraphic-Bold.woff2) format('woff2'),url(fonts/KaTeX_Caligraphic-Bold.woff) format('woff'),url(fonts/KaTeX_Caligraphic-Bold.ttf) format('truetype');font-weight:700;font-style:normal}@font-face{font-family:KaTeX_Caligraphic;src:url(fonts/KaTeX_Caligraphic-Regular.eot);src:url(fonts/KaTeX_Caligraphic-Regular.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Caligraphic-Regular.woff2) format('woff2'),url(fonts/KaTeX_Caligraphic-Regular.woff) format('woff'),url(fonts/KaTeX_Caligraphic-Regular.ttf) format('truetype');font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Fraktur;src:url(fonts/KaTeX_Fraktur-Bold.eot);src:url(fonts/KaTeX_Fraktur-Bold.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Fraktur-Bold.woff2) format('woff2'),url(fonts/KaTeX_Fraktur-Bold.woff) format('woff'),url(fonts/KaTeX_Fraktur-Bold.ttf) format('truetype');font-weight:700;font-style:normal}@font-face{font-family:KaTeX_Fraktur;src:url(fonts/KaTeX_Fraktur-Regular.eot);src:url(fonts/KaTeX_Fraktur-Regular.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Fraktur-Regular.woff2) format('woff2'),url(fonts/KaTeX_Fraktur-Regular.woff) format('woff'),url(fonts/KaTeX_Fraktur-Regular.ttf) format('truetype');font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Main;src:url(fonts/KaTeX_Main-Bold.eot);src:url(fonts/KaTeX_Main-Bold.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Main-Bold.woff2) format('woff2'),url(fonts/KaTeX_Main-Bold.woff) format('woff'),url(fonts/KaTeX_Main-Bold.ttf) format('truetype');font-weight:700;font-style:normal}@font-face{font-family:KaTeX_Main;src:url(fonts/KaTeX_Main-Italic.eot);src:url(fonts/KaTeX_Main-Italic.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Main-Italic.woff2) format('woff2'),url(fonts/KaTeX_Main-Italic.woff) format('woff'),url(fonts/KaTeX_Main-Italic.ttf) format('truetype');font-weight:400;font-style:italic}@font-face{font-family:KaTeX_Main;src:url(fonts/KaTeX_Main-Regular.eot);src:url(fonts/KaTeX_Main-Regular.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Main-Regular.woff2) format('woff2'),url(fonts/KaTeX_Main-Regular.woff) format('woff'),url(fonts/KaTeX_Main-Regular.ttf) format('truetype');font-weight:400;font-style:normal}@font-face{font-family:KaTeX_Math;src:url(fonts/KaTeX_Math-Italic.eot);src:url(fonts/KaTeX_Math-Italic.eot#iefix) format('embedded-opentype'),url(fonts/KaTeX_Math-Italic.woff2) 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0;text-align:center}.katex-display>.katex{display:block;text-align:center;white-space:nowrap}.katex-display>.katex>.katex-html{display:block;position:relative}.katex-display>.katex>.katex-html>.tag{position:absolute;right:0}.katex-display.leqno>.katex>.katex-html>.tag{left:0;right:auto}.katex-display.fleqn>.katex{text-align:left;padding-left:2em}
diff --git a/static/css/main.css b/static/css/main.css
index 779581f..7f30a3f 100644
--- a/static/css/main.css
+++ b/static/css/main.css
@@ -10,6 +10,12 @@ body {
   flex-flow: column;
   height: 100vh;
 }
+@media (prefers-color-scheme: dark) {
+  body {
+    background: black;
+    color: white;
+  }
+}
 .container[role=main] {
   margin-bottom:50px;
   flex: 1 0 auto;
@@ -33,6 +39,12 @@ p a {
   /* text-decoration: underline */
   color: #008AFF;
 }
+@media (prefers-color-scheme: dark) {
+  p a {
+    color: #50afff;
+  }
+}
+
 h1,h2,h3,h4,h5,h6 {
   font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
   font-weight: 800;
@@ -40,6 +52,11 @@ h1,h2,h3,h4,h5,h6 {
 a {
   color: #008AFF;
 }
+@media (prefers-color-scheme: dark) {
+  a {
+    color: #50afff;
+  }
+}
 a:hover,
 a:focus {
   color: #0085a1;
@@ -51,6 +68,11 @@ blockquote {
 blockquote p:first-child {
   margin-top: 0;
 }
+@media (prefers-color-scheme: dark) {
+  blockquote {
+    border-left: 5px solid #444;
+  }
+}
 hr.small {
   max-width: 100px;
   margin: 15px auto;
@@ -95,30 +117,27 @@ div.panel-body a.list-group-item.view-all {
   font-weight: 600;
 }
 
-::-moz-selection {
+::-moz-selection, ::selection {
   color: white;
   text-shadow: none;
   background: #0085a1;
 }
-::selection {
-  color: white;
-  text-shadow: none;
-  background: #0085a1;
-}
-img::selection {
-  color: white;
-  background: transparent;
-}
-img::-moz-selection {
+img::selection, img::-moz-selection {
   color: white;
   background: transparent;
 }
 
+
 img {
   display: block;
   margin: auto;
   max-width: 100%;
 }
+@media (prefers-color-scheme: dark) {
+figure:not(.dark) img, img.white {
+  background-color: white;
+}
+}
 
 .img-title {
   width: 100%;
@@ -141,6 +160,12 @@ img {
   border-bottom: 1px solid #EAEAEA;
   font-family: 'Open Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
 }
+@media (prefers-color-scheme: dark) {
+  .navbar-custom {
+    background: #505050;
+    border-bottom: 1px solid #AAA;
+  }
+}
 
 .navbar-custom .nav li a {
   text-transform: uppercase;
@@ -154,6 +179,13 @@ img {
   color: #404040;
 }
 
+@media (prefers-color-scheme: dark) {
+  .navbar-custom .navbar-brand,
+  .navbar-custom .nav li a {
+    color: #b0b0b0;
+  }
+}
+
 .navbar-custom .navbar-brand:hover,
 .navbar-custom .navbar-brand:focus ,
 .navbar-custom .nav li a:hover,
@@ -161,6 +193,15 @@ img {
   color: #0085a1;
 }
 
+.navbar-custom .navbar-brand:hover,
+.navbar-custom .navbar-brand:focus ,
+.navbar-custom .nav li a:hover,
+.navbar-custom .nav li a:focus {
+  @media (prefers-color-scheme: dark) {
+    color: #b0e0ff;
+  }
+}
+
 .navbar-custom .navbar-brand-logo {
   padding-top: 0;
   -webkit-transition: padding .5s ease-in-out;
@@ -294,6 +335,17 @@ img {
     border-width: 0 1px 1px;
   }
 }
+@media (prefers-color-scheme: dark) {
+  .navbar-custom .nav .navlinks-container:hover {
+    background: #666;
+  }
+  .navbar-custom .nav .navlinks-container .navlinks-children a {
+    border: 1px solid #AAA;
+  }
+  .navbar-custom .nav .navlinks-container .navlinks-children a {
+    background: #444;
+  }
+}
 
 /* --- Footer --- */
 
@@ -307,6 +359,7 @@ footer {
 
 footer a {
   color: #404040;
+
 }
 
 footer .list-inline {
@@ -335,13 +388,22 @@ footer .theme-by {
   }
 }
 
+@media (prefers-color-scheme: dark) {
+  footer {
+    background: #444;
+    border-top: 1px #AAA solid;
+  }
+  footer a {
+    color: #AAA;
+  }
+}
+
 /* --- Post preview --- */
 
 .post-preview {
   padding: 20px 0;
   border-bottom: 1px solid #eee;
 }
-
 @media only screen and (min-width: 768px) {
   .post-preview {
     padding: 35px 0;
@@ -356,6 +418,11 @@ footer .theme-by {
   text-decoration: none;
   color: #404040;
 }
+@media (prefers-color-scheme: dark) {
+  .post-preview a {
+    color: #AAA;
+  }
+}
 
 .post-preview a:focus,
 .post-preview a:hover {
@@ -657,6 +724,13 @@ footer .theme-by {
   border: 1px solid #0085a1;
 }
 
+@media (prefers-color-scheme: dark) {
+.pager li a {
+  background: #444;
+  color: white;
+}
+}
+
 .pager {
   margin: 10px 0 0;
 }
@@ -686,9 +760,19 @@ table tr {
   margin: 0;
   padding: 0;
 }
+@media (prefers-color-scheme: dark) {
+}
 table tr:nth-child(2n) {
   background-color: #f8f8f8;
 }
+@media (prefers-color-scheme: dark) {
+table tr {
+  background-color: #181818;
+}
+table tr:nth-child(2n) {
+  background-color: #303030
+}
+}
 table tr th {
   font-weight: bold;
   border: 1px solid #cccccc;
@@ -815,3 +899,43 @@ h4.see-also {
  ul.share li:hover .fab {
   transform: scale(1.4)
 }
+
+/* Dark mode */
+@media (prefers-color-scheme: dark) {
+  code {
+    background-color: #222;
+    color: #fbb;
+  }
+  pre code {
+    color: #ccc;
+  }
+  .well {
+    background-color: #444;
+  }
+  .panel {
+    background-color: #222;
+  }
+  .list-group-item {
+    background-color: #333;
+  }
+
+  pre.chroma {
+    color: white;
+    background-color: #444;
+  }
+  pre.chroma .k {
+    color: #44AACC;
+  }
+  pre.chroma .kt {
+    color: #33CCCC;
+  }
+  pre.chroma .o {
+    color: #AAA;
+  }
+  pre.chroma .nb {
+    color: #00fee9;
+  }
+  pre.chroma .ow {
+    color: #CC0;
+  }
+}
diff --git a/static/js/auto-render.min.js b/static/js/auto-render.min.js
index 30cc312..840e74b 100644
--- a/static/js/auto-render.min.js
+++ b/static/js/auto-render.min.js
@@ -1 +1 @@
-(function(e){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=e()}else if(typeof define==="function"&&define.amd){define([],e)}else{var t;if(typeof window!=="undefined"){t=window}else if(typeof global!=="undefined"){t=global}else if(typeof self!=="undefined"){t=self}else{t=this}t.renderMathInElement=e()}})(function(){var e,t,r;return function n(e,t,r){function a(o,l){if(!t[o]){if(!e[o]){var f=typeof require=="function"&&require;if(!l&&f)return f(o,!0);if(i)return i(o,!0);var d=new Error("Cannot find module '"+o+"'");throw d.code="MODULE_NOT_FOUND",d}var s=t[o]={exports:{}};e[o][0].call(s.exports,function(t){var r=e[o][1][t];return a(r?r:t)},s,s.exports,n,e,t,r)}return t[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)a(r[o]);return a}({1:[function(e,t,r){var n=e("./splitAtDelimiters");var a=function(e,t){var r=[{type:"text",data:e}];for(var a=0;a<t.length;a++){var i=t[a];r=n(r,i.left,i.right,i.display||false)}return r};var i=function(e,t){var r=a(e,t);var n=document.createDocumentFragment();for(var i=0;i<r.length;i++){if(r[i].type==="text"){n.appendChild(document.createTextNode(r[i].data))}else{var o=document.createElement("span");var l=r[i].data;try{katex.render(l,o,{displayMode:r[i].display})}catch(f){if(!(f instanceof katex.ParseError)){throw f}console.error("KaTeX auto-render: Failed to parse `"+r[i].data+"` with ",f);n.appendChild(document.createTextNode(r[i].rawData));continue}n.appendChild(o)}}return n};var o=function(e,t,r){for(var n=0;n<e.childNodes.length;n++){var a=e.childNodes[n];if(a.nodeType===3){var l=i(a.textContent,t);n+=l.childNodes.length-1;e.replaceChild(l,a)}else if(a.nodeType===1){var f=r.indexOf(a.nodeName.toLowerCase())===-1;if(f){o(a,t,r)}}}};var l={delimiters:[{left:"$$",right:"$$",display:true},{left:"\\[",right:"\\]",display:true},{left:"\\(",right:"\\)",display:false}],ignoredTags:["script","noscript","style","textarea","pre","code"]};var f=function(e){var t;var r;for(var n=1,a=arguments.length;n<a;n++){t=arguments[n];for(r in t){if(Object.prototype.hasOwnProperty.call(t,r)){e[r]=t[r]}}}return e};var d=function(e,t){if(!e){throw new Error("No element provided to render")}t=f({},l,t);o(e,t.delimiters,t.ignoredTags)};t.exports=d},{"./splitAtDelimiters":2}],2:[function(e,t,r){var n=function(e,t,r){var n=r;var a=0;var i=e.length;while(n<t.length){var o=t[n];if(a<=0&&t.slice(n,n+i)===e){return n}else if(o==="\\"){n++}else if(o==="{"){a++}else if(o==="}"){a--}n++}return-1};var a=function(e,t,r,a){var i=[];for(var o=0;o<e.length;o++){if(e[o].type==="text"){var l=e[o].data;var f=true;var d=0;var s;s=l.indexOf(t);if(s!==-1){d=s;i.push({type:"text",data:l.slice(0,d)});f=false}while(true){if(f){s=l.indexOf(t,d);if(s===-1){break}i.push({type:"text",data:l.slice(d,s)});d=s}else{s=n(r,l,d+t.length);if(s===-1){break}i.push({type:"math",data:l.slice(d+t.length,s),rawData:l.slice(d,s+r.length),display:a});d=s+r.length}f=!f}i.push({type:"text",data:l.slice(d)})}else{i.push(e[o])}}return i};t.exports=a},{}]},{},[1])(1)});
+!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("katex")):"function"==typeof define&&define.amd?define(["katex"],t):"object"==typeof exports?exports.renderMathInElement=t(require("katex")):e.renderMathInElement=t(e.katex)}("undefined"!=typeof self?self:this,function(e){return function(e){var t={};function r(n){if(t[n])return t[n].exports;var o=t[n]={i:n,l:!1,exports:{}};return e[n].call(o.exports,o,o.exports,r),o.l=!0,o.exports}return r.m=e,r.c=t,r.d=function(e,t,n){r.o(e,t)||Object.defineProperty(e,t,{enumerable:!0,get:n})},r.r=function(e){"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},r.t=function(e,t){if(1&t&&(e=r(e)),8&t)return e;if(4&t&&"object"==typeof e&&e&&e.__esModule)return e;var n=Object.create(null);if(r.r(n),Object.defineProperty(n,"default",{enumerable:!0,value:e}),2&t&&"string"!=typeof e)for(var o in e)r.d(n,o,function(t){return e[t]}.bind(null,o));return n},r.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return r.d(t,"a",t),t},r.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)},r.p="",r(r.s=1)}([function(t,r){t.exports=e},function(e,t,r){"use strict";r.r(t);var n=r(0),o=r.n(n),a=function(e,t,r){for(var n=r,o=0,a=e.length;n<t.length;){var i=t[n];if(o<=0&&t.slice(n,n+a)===e)return n;"\\"===i?n++:"{"===i?o++:"}"===i&&o--,n++}return-1},i=function(e,t,r,n){for(var o=[],i=0;i<e.length;i++)if("text"===e[i].type){var l=e[i].data,d=!0,s=0,f=void 0;for(-1!==(f=l.indexOf(t))&&(s=f,o.push({type:"text",data:l.slice(0,s)}),d=!1);;){if(d){if(-1===(f=l.indexOf(t,s)))break;o.push({type:"text",data:l.slice(s,f)}),s=f}else{if(-1===(f=a(r,l,s+t.length)))break;o.push({type:"math",data:l.slice(s+t.length,f),rawData:l.slice(s,f+r.length),display:n}),s=f+r.length}d=!d}o.push({type:"text",data:l.slice(s)})}else o.push(e[i]);return o},l=function(e,t){var r=function(e,t){for(var r=[{type:"text",data:e}],n=0;n<t.length;n++){var o=t[n];r=i(r,o.left,o.right,o.display||!1)}return r}(e,t.delimiters);if(1===r.length&&"text"===r[0].type)return null;for(var n=document.createDocumentFragment(),a=0;a<r.length;a++)if("text"===r[a].type)n.appendChild(document.createTextNode(r[a].data));else{var l=document.createElement("span"),d=r[a].data;t.displayMode=r[a].display;try{t.preProcess&&(d=t.preProcess(d)),o.a.render(d,l,t)}catch(e){if(!(e instanceof o.a.ParseError))throw e;t.errorCallback("KaTeX auto-render: Failed to parse `"+r[a].data+"` with ",e),n.appendChild(document.createTextNode(r[a].rawData));continue}n.appendChild(l)}return n};t.default=function(e,t){if(!e)throw new Error("No element provided to render");var r={};for(var n in t)t.hasOwnProperty(n)&&(r[n]=t[n]);r.delimiters=r.delimiters||[{left:"$$",right:"$$",display:!0},{left:"\\(",right:"\\)",display:!1},{left:"\\[",right:"\\]",display:!0}],r.ignoredTags=r.ignoredTags||["script","noscript","style","textarea","pre","code","option"],r.ignoredClasses=r.ignoredClasses||[],r.errorCallback=r.errorCallback||console.error,r.macros=r.macros||{},function e(t,r){for(var n=0;n<t.childNodes.length;n++){var o=t.childNodes[n];if(3===o.nodeType){var a=l(o.textContent,r);a&&(n+=a.childNodes.length-1,t.replaceChild(a,o))}else 1===o.nodeType&&function(){var t=" "+o.className+" ";-1===r.ignoredTags.indexOf(o.nodeName.toLowerCase())&&r.ignoredClasses.every(function(e){return-1===t.indexOf(" "+e+" ")})&&e(o,r)}()}}(e,r)}}]).default});
\ No newline at end of file
diff --git a/static/js/jquery-3.5.1.slim.min.js b/static/js/jquery-3.5.1.slim.min.js
new file mode 100644
index 0000000..36b4e1a
--- /dev/null
+++ b/static/js/jquery-3.5.1.slim.min.js
@@ -0,0 +1,2 @@
+/*! jQuery v3.5.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-deprecated/ajax-event-alias,-effects,-effects/Tween,-effects/animatedSelector | (c) JS Foundation and other contributors | jquery.org/license */
+!function(e,t){"use strict";"object"==typeof module&&"object"==typeof module.exports?module.exports=e.document?t(e,!0):function(e){if(!e.document)throw new Error("jQuery requires a window with a document");return t(e)}:t(e)}("undefined"!=typeof window?window:this,function(g,e){"use strict";var t=[],r=Object.getPrototypeOf,s=t.slice,v=t.flat?function(e){return t.flat.call(e)}:function(e){return t.concat.apply([],e)},u=t.push,i=t.indexOf,n={},o=n.toString,y=n.hasOwnProperty,a=y.toString,l=a.call(Object),m={},b=function(e){return"function"==typeof e&&"number"!=typeof e.nodeType},x=function(e){return null!=e&&e===e.window},w=g.document,c={type:!0,src:!0,nonce:!0,noModule:!0};function C(e,t,n){var r,i,o=(n=n||w).createElement("script");if(o.text=e,t)for(r in c)(i=t[r]||t.getAttribute&&t.getAttribute(r))&&o.setAttribute(r,i);n.head.appendChild(o).parentNode.removeChild(o)}function T(e){return null==e?e+"":"object"==typeof e||"function"==typeof e?n[o.call(e)]||"object":typeof e}var f="3.5.1 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index 66c0821..4df7e17 100644
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+++ b/static/js/katex.min.js
@@ -1,4 +1 @@
-(function(e){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=e()}else if(typeof define==="function"&&define.amd){define([],e)}else{var t;if(typeof window!=="undefined"){t=window}else if(typeof global!=="undefined"){t=global}else if(typeof self!=="undefined"){t=self}else{t=this}t.katex=e()}})(function(){var e,t,r;return function a(e,t,r){function i(s,l){if(!t[s]){if(!e[s]){var o=typeof require=="function"&&require;if(!l&&o)return o(s,!0);if(n)return n(s,!0);var u=new Error("Cannot find module '"+s+"'");throw u.code="MODULE_NOT_FOUND",u}var p=t[s]={exports:{}};e[s][0].call(p.exports,function(t){var r=e[s][1][t];return i(r?r:t)},p,p.exports,a,e,t,r)}return t[s].exports}var n=typeof require=="function"&&require;for(var s=0;s<r.length;s++)i(r[s]);return i}({1:[function(e,t,r){var a=e("./src/ParseError");var i=e("./src/Settings");var n=e("./src/buildTree");var s=e("./src/parseTree");var l=e("./src/utils");var o=function(e,t,r){l.clearNode(t);var a=new i(r);var o=s(e,a);var u=n(o,e,a).toNode();t.appendChild(u)};if(typeof document!=="undefined"){if(document.compatMode!=="CSS1Compat"){typeof console!=="undefined"&&console.warn("Warning: KaTeX doesn't work in quirks mode. Make sure your "+"website has a suitable doctype.");o=function(){throw new a("KaTeX doesn't work in quirks mode.")}}}var u=function(e,t){var r=new i(t);var a=s(e,r);return n(a,e,r).toMarkup()};var p=function(e,t){var r=new i(t);return s(e,r)};t.exports={render:o,renderToString:u,__parse:p,ParseError:a}},{"./src/ParseError":6,"./src/Settings":8,"./src/buildTree":13,"./src/parseTree":22,"./src/utils":25}],2:[function(e,t,r){"use strict";function a(e){if(!e.__matchAtRelocatable){var t=e.source+"|()";var r="g"+(e.ignoreCase?"i":"")+(e.multiline?"m":"")+(e.unicode?"u":"");e.__matchAtRelocatable=new RegExp(t,r)}return e.__matchAtRelocatable}function i(e,t,r){if(e.global||e.sticky){throw new Error("matchAt(...): Only non-global regexes are supported")}var i=a(e);i.lastIndex=r;var n=i.exec(t);if(n[n.length-1]==null){n.length=n.length-1;return n}else{return null}}t.exports=i},{}],3:[function(e,t,r){var a=e("match-at");var i=e("./ParseError");function n(e){this.input=e;this.pos=0}function s(e,t,r,a){this.text=e;this.start=t;this.end=r;this.lexer=a}s.prototype.range=function(e,t){if(e.lexer!==this.lexer){return new s(t)}return new s(t,this.start,e.end,this.lexer)};var l=new RegExp("([ \r\n	]+)|"+"([!-\\[\\]-\u2027\u202a-\ud7ff\uf900-\uffff]"+"|[\ud800-\udbff][\udc00-\udfff]"+"|\\\\(?:[a-zA-Z]+|[^\ud800-\udfff])"+")");n.prototype.lex=function(){var e=this.input;var t=this.pos;if(t===e.length){return new s("EOF",t,t,this)}var r=a(l,e,t);if(r===null){throw new i("Unexpected character: '"+e[t]+"'",new s(e[t],t,t+1,this))}var n=r[2]||" ";var o=this.pos;this.pos+=r[0].length;var u=this.pos;return new s(n,o,u,this)};t.exports=n},{"./ParseError":6,"match-at":2}],4:[function(e,t,r){var a=e("./Lexer");function i(e,t){this.lexer=new a(e);this.macros=t;this.stack=[];this.discardedWhiteSpace=[]}i.prototype.nextToken=function(){for(;;){if(this.stack.length===0){this.stack.push(this.lexer.lex())}var e=this.stack.pop();var t=e.text;if(!(t.charAt(0)==="\\"&&this.macros.hasOwnProperty(t))){return e}var r=this.macros[t];if(typeof r==="string"){var i=new a(r);r=[];var n=i.lex();while(n.text!=="EOF"){r.push(n);n=i.lex()}r.reverse();this.macros[t]=r}this.stack=this.stack.concat(r)}};i.prototype.get=function(e){this.discardedWhiteSpace=[];var t=this.nextToken();if(e){while(t.text===" "){this.discardedWhiteSpace.push(t);t=this.nextToken()}}return t};i.prototype.unget=function(e){this.stack.push(e);while(this.discardedWhiteSpace.length!==0){this.stack.push(this.discardedWhiteSpace.pop())}};t.exports=i},{"./Lexer":3}],5:[function(e,t,r){function a(e){this.style=e.style;this.color=e.color;this.size=e.size;this.phantom=e.phantom;this.font=e.font;if(e.parentStyle===undefined){this.parentStyle=e.style}else{this.parentStyle=e.parentStyle}if(e.parentSize===undefined){this.parentSize=e.size}else{this.parentSize=e.parentSize}}a.prototype.extend=function(e){var t={style:this.style,size:this.size,color:this.color,parentStyle:this.style,parentSize:this.size,phantom:this.phantom,font:this.font};for(var r in e){if(e.hasOwnProperty(r)){t[r]=e[r]}}return new a(t)};a.prototype.withStyle=function(e){return this.extend({style:e})};a.prototype.withSize=function(e){return this.extend({size:e})};a.prototype.withColor=function(e){return this.extend({color:e})};a.prototype.withPhantom=function(){return this.extend({phantom:true})};a.prototype.withFont=function(e){return this.extend({font:e||this.font})};a.prototype.reset=function(){return this.extend({})};var i={"katex-blue":"#6495ed","katex-orange":"#ffa500","katex-pink":"#ff00af","katex-red":"#df0030","katex-green":"#28ae7b","katex-gray":"gray","katex-purple":"#9d38bd","katex-blueA":"#ccfaff","katex-blueB":"#80f6ff","katex-blueC":"#63d9ea","katex-blueD":"#11accd","katex-blueE":"#0c7f99","katex-tealA":"#94fff5","katex-tealB":"#26edd5","katex-tealC":"#01d1c1","katex-tealD":"#01a995","katex-tealE":"#208170","katex-greenA":"#b6ffb0","katex-greenB":"#8af281","katex-greenC":"#74cf70","katex-greenD":"#1fab54","katex-greenE":"#0d923f","katex-goldA":"#ffd0a9","katex-goldB":"#ffbb71","katex-goldC":"#ff9c39","katex-goldD":"#e07d10","katex-goldE":"#a75a05","katex-redA":"#fca9a9","katex-redB":"#ff8482","katex-redC":"#f9685d","katex-redD":"#e84d39","katex-redE":"#bc2612","katex-maroonA":"#ffbde0","katex-maroonB":"#ff92c6","katex-maroonC":"#ed5fa6","katex-maroonD":"#ca337c","katex-maroonE":"#9e034e","katex-purpleA":"#ddd7ff","katex-purpleB":"#c6b9fc","katex-purpleC":"#aa87ff","katex-purpleD":"#7854ab","katex-purpleE":"#543b78","katex-mintA":"#f5f9e8","katex-mintB":"#edf2df","katex-mintC":"#e0e5cc","katex-grayA":"#f6f7f7","katex-grayB":"#f0f1f2","katex-grayC":"#e3e5e6","katex-grayD":"#d6d8da","katex-grayE":"#babec2","katex-grayF":"#888d93","katex-grayG":"#626569","katex-grayH":"#3b3e40","katex-grayI":"#21242c","katex-kaBlue":"#314453","katex-kaGreen":"#71B307"};a.prototype.getColor=function(){if(this.phantom){return"transparent"}else{return i[this.color]||this.color}};t.exports=a},{}],6:[function(e,t,r){function a(e,t){var r="KaTeX parse error: "+e;var i;var n;if(t&&t.lexer&&t.start<=t.end){var s=t.lexer.input;i=t.start;n=t.end;if(i===s.length){r+=" at end of input: "}else{r+=" at position "+(i+1)+": "}var l=s.slice(i,n).replace(/[^]/g,"$&\u0332");var o;if(i>15){o="\u2026"+s.slice(i-15,i)}else{o=s.slice(0,i)}var u;if(n+15<s.length){u=s.slice(n,n+15)+"\u2026"}else{u=s.slice(n)}r+=o+l+u}var p=new Error(r);p.name="ParseError";p.__proto__=a.prototype;p.position=i;return p}a.prototype.__proto__=Error.prototype;t.exports=a},{}],7:[function(e,t,r){var a=e("./functions");var i=e("./environments");var n=e("./MacroExpander");var s=e("./symbols");var l=e("./utils");var o=e("./unicodeRegexes").cjkRegex;var u=e("./parseData");var p=e("./ParseError");function h(e,t){this.gullet=new n(e,t.macros);this.settings=t;this.leftrightDepth=0}var c=u.ParseNode;function m(e,t,r){this.result=e;this.isFunction=t;this.token=r}h.prototype.expect=function(e,t){if(this.nextToken.text!==e){throw new p("Expected '"+e+"', got '"+this.nextToken.text+"'",this.nextToken)}if(t!==false){this.consume()}};h.prototype.consume=function(){this.nextToken=this.gullet.get(this.mode==="math")};h.prototype.switchMode=function(e){this.gullet.unget(this.nextToken);this.mode=e;this.consume()};h.prototype.parse=function(){this.mode="math";this.consume();var e=this.parseInput();return e};h.prototype.parseInput=function(){var e=this.parseExpression(false);this.expect("EOF",false);return e};var f=["}","\\end","\\right","&","\\\\","\\cr"];h.prototype.parseExpression=function(e,t){var r=[];while(true){var i=this.nextToken;if(f.indexOf(i.text)!==-1){break}if(t&&i.text===t){break}if(e&&a[i.text]&&a[i.text].infix){break}var n=this.parseAtom();if(!n){if(!this.settings.throwOnError&&i.text[0]==="\\"){var s=this.handleUnsupportedCmd();r.push(s);continue}break}r.push(n)}return this.handleInfixNodes(r)};h.prototype.handleInfixNodes=function(e){var t=-1;var r;for(var a=0;a<e.length;a++){var i=e[a];if(i.type==="infix"){if(t!==-1){throw new p("only one infix operator per group",i.value.token)}t=a;r=i.value.replaceWith}}if(t!==-1){var n;var s;var l=e.slice(0,t);var o=e.slice(t+1);if(l.length===1&&l[0].type==="ordgroup"){n=l[0]}else{n=new c("ordgroup",l,this.mode)}if(o.length===1&&o[0].type==="ordgroup"){s=o[0]}else{s=new c("ordgroup",o,this.mode)}var u=this.callFunction(r,[n,s],null);return[new c(u.type,u,this.mode)]}else{return e}};var v=1;h.prototype.handleSupSubscript=function(e){var t=this.nextToken;var r=t.text;this.consume();var i=this.parseGroup();if(!i){if(!this.settings.throwOnError&&this.nextToken.text[0]==="\\"){return this.handleUnsupportedCmd()}else{throw new p("Expected group after '"+r+"'",t)}}else if(i.isFunction){var n=a[i.result].greediness;if(n>v){return this.parseFunction(i)}else{throw new p("Got function '"+i.result+"' with no arguments "+"as "+e,t)}}else{return i.result}};h.prototype.handleUnsupportedCmd=function(){var e=this.nextToken.text;var t=[];for(var r=0;r<e.length;r++){t.push(new c("textord",e[r],"text"))}var a=new c("text",{body:t,type:"text"},this.mode);var i=new c("color",{color:this.settings.errorColor,value:[a],type:"color"},this.mode);this.consume();return i};h.prototype.parseAtom=function(){var e=this.parseImplicitGroup();if(this.mode==="text"){return e}var t;var r;while(true){var a=this.nextToken;if(a.text==="\\limits"||a.text==="\\nolimits"){if(!e||e.type!=="op"){throw new p("Limit controls must follow a math operator",a)}else{var i=a.text==="\\limits";e.value.limits=i;e.value.alwaysHandleSupSub=true}this.consume()}else if(a.text==="^"){if(t){throw new p("Double superscript",a)}t=this.handleSupSubscript("superscript")}else if(a.text==="_"){if(r){throw new p("Double subscript",a)}r=this.handleSupSubscript("subscript")}else if(a.text==="'"){var n=new c("textord","\\prime",this.mode);var s=[n];this.consume();while(this.nextToken.text==="'"){s.push(n);this.consume()}t=new c("ordgroup",s,this.mode)}else{break}}if(t||r){return new c("supsub",{base:e,sup:t,sub:r},this.mode)}else{return e}};var d=["\\tiny","\\scriptsize","\\footnotesize","\\small","\\normalsize","\\large","\\Large","\\LARGE","\\huge","\\Huge"];var g=["\\displaystyle","\\textstyle","\\scriptstyle","\\scriptscriptstyle"];h.prototype.parseImplicitGroup=function(){var e=this.parseSymbol();if(e==null){return this.parseFunction()}var t=e.result;var r;if(t==="\\left"){var a=this.parseFunction(e);++this.leftrightDepth;r=this.parseExpression(false);--this.leftrightDepth;this.expect("\\right",false);var n=this.parseFunction();return new c("leftright",{body:r,left:a.value.value,right:n.value.value},this.mode)}else if(t==="\\begin"){var s=this.parseFunction(e);var o=s.value.name;if(!i.hasOwnProperty(o)){throw new p("No such environment: "+o,s.value.nameGroup)}var u=i[o];var h=this.parseArguments("\\begin{"+o+"}",u);var m={mode:this.mode,envName:o,parser:this,positions:h.pop()};var f=u.handler(m,h);this.expect("\\end",false);var v=this.nextToken;var y=this.parseFunction();if(y.value.name!==o){throw new p("Mismatch: \\begin{"+o+"} matched "+"by \\end{"+y.value.name+"}",v)}f.position=y.position;return f}else if(l.contains(d,t)){r=this.parseExpression(false);return new c("sizing",{size:"size"+(l.indexOf(d,t)+1),value:r},this.mode)}else if(l.contains(g,t)){r=this.parseExpression(true);return new c("styling",{style:t.slice(1,t.length-5),value:r},this.mode)}else{return this.parseFunction(e)}};h.prototype.parseFunction=function(e){if(!e){e=this.parseGroup()}if(e){if(e.isFunction){var t=e.result;var r=a[t];if(this.mode==="text"&&!r.allowedInText){throw new p("Can't use function '"+t+"' in text mode",e.token)}var i=this.parseArguments(t,r);var n=e.token;var s=this.callFunction(t,i,i.pop(),n);return new c(s.type,s,this.mode)}else{return e.result}}else{return null}};h.prototype.callFunction=function(e,t,r,i){var n={funcName:e,parser:this,positions:r,token:i};return a[e].handler(n,t)};h.prototype.parseArguments=function(e,t){var r=t.numArgs+t.numOptionalArgs;if(r===0){return[[this.pos]]}var i=t.greediness;var n=[this.pos];var s=[];for(var l=0;l<r;l++){var o=this.nextToken;var u=t.argTypes&&t.argTypes[l];var h;if(l<t.numOptionalArgs){if(u){h=this.parseGroupOfType(u,true)}else{h=this.parseGroup(true)}if(!h){s.push(null);n.push(this.pos);continue}}else{if(u){h=this.parseGroupOfType(u)}else{h=this.parseGroup()}if(!h){if(!this.settings.throwOnError&&this.nextToken.text[0]==="\\"){h=new m(this.handleUnsupportedCmd(this.nextToken.text),false)}else{throw new p("Expected group after '"+e+"'",o)}}}var c;if(h.isFunction){var f=a[h.result].greediness;if(f>i){c=this.parseFunction(h)}else{throw new p("Got function '"+h.result+"' as "+"argument to '"+e+"'",o)}}else{c=h.result}s.push(c);n.push(this.pos)}s.push(n);return s};h.prototype.parseGroupOfType=function(e,t){var r=this.mode;if(e==="original"){e=r}if(e==="color"){return this.parseColorGroup(t)}if(e==="size"){return this.parseSizeGroup(t)}this.switchMode(e);if(e==="text"){while(this.nextToken.text===" "){this.consume()}}var a=this.parseGroup(t);this.switchMode(r);return a};h.prototype.parseStringGroup=function(e,t){if(t&&this.nextToken.text!=="["){return null}var r=this.mode;this.mode="text";this.expect(t?"[":"{");var a="";var i=this.nextToken;var n=i;while(this.nextToken.text!==(t?"]":"}")){if(this.nextToken.text==="EOF"){throw new p("Unexpected end of input in "+e,i.range(this.nextToken,a))}n=this.nextToken;a+=n.text;this.consume()}this.mode=r;this.expect(t?"]":"}");return i.range(n,a)};h.prototype.parseRegexGroup=function(e,t){var r=this.mode;this.mode="text";var a=this.nextToken;var i=a;var n="";while(this.nextToken.text!=="EOF"&&e.test(n+this.nextToken.text)){i=this.nextToken;n+=i.text;this.consume()}if(n===""){throw new p("Invalid "+t+": '"+a.text+"'",a)}this.mode=r;return a.range(i,n)};h.prototype.parseColorGroup=function(e){var t=this.parseStringGroup("color",e);if(!t){return null}var r=/^(#[a-z0-9]+|[a-z]+)$/i.exec(t.text);if(!r){throw new p("Invalid color: '"+t.text+"'",t)}return new m(new c("color",r[0],this.mode),false)};h.prototype.parseSizeGroup=function(e){var t;if(!e&&this.nextToken.text!=="{"){t=this.parseRegexGroup(/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2}$/,"size")}else{t=this.parseStringGroup("size",e)}if(!t){return null}var r=/([-+]?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/.exec(t.text);if(!r){throw new p("Invalid size: '"+t.text+"'",t)}var a={number:+(r[1]+r[2]),unit:r[3]};if(a.unit!=="em"&&a.unit!=="ex"&&a.unit!=="mu"){throw new p("Invalid unit: '"+a.unit+"'",t)}return new m(new c("color",a,this.mode),false)};h.prototype.parseGroup=function(e){var t=this.nextToken;if(this.nextToken.text===(e?"[":"{")){this.consume();var r=this.parseExpression(false,e?"]":null);var a=this.nextToken;this.expect(e?"]":"}");if(this.mode==="text"){this.formLigatures(r)}return new m(new c("ordgroup",r,this.mode,t,a),false)}else{return e?null:this.parseSymbol()}};h.prototype.formLigatures=function(e){var t;var r=e.length-1;for(t=0;t<r;++t){var a=e[t];var i=a.value;if(i==="-"&&e[t+1].value==="-"){if(t+1<r&&e[t+2].value==="-"){e.splice(t,3,new c("textord","---","text",a,e[t+2]));r-=2}else{e.splice(t,2,new c("textord","--","text",a,e[t+1]));r-=1}}if((i==="'"||i==="`")&&e[t+1].value===i){e.splice(t,2,new c("textord",i+i,"text",a,e[t+1]));r-=1}}};h.prototype.parseSymbol=function(){var e=this.nextToken;if(a[e.text]){this.consume();return new m(e.text,true,e)}else if(s[this.mode][e.text]){this.consume();return new m(new c(s[this.mode][e.text].group,e.text,this.mode,e),false,e)}else if(this.mode==="text"&&o.test(e.text)){this.consume();return new m(new c("textord",e.text,this.mode,e),false,e)}else{return null}};h.prototype.ParseNode=c;t.exports=h},{"./MacroExpander":4,"./ParseError":6,"./environments":16,"./functions":19,"./parseData":21,"./symbols":23,"./unicodeRegexes":24,"./utils":25}],8:[function(e,t,r){function a(e,t){return e===undefined?t:e}function i(e){e=e||{};this.displayMode=a(e.displayMode,false);this.throwOnError=a(e.throwOnError,true);this.errorColor=a(e.errorColor,"#cc0000");this.macros=e.macros||{}}t.exports=i},{}],9:[function(e,t,r){var a=e("./fontMetrics.js").sigmas;var i=[{},{},{}];var n;for(var s in a){if(a.hasOwnProperty(s)){for(n=0;n<3;n++){i[n][s]=a[s][n]}}}for(n=0;n<3;n++){i[n].emPerEx=a.xHeight[n]/a.quad[n]}function l(e,t,r,a){this.id=e;this.size=t;this.cramped=a;this.sizeMultiplier=r;this.metrics=i[t>0?t-1:0]}l.prototype.sup=function(){return y[x[this.id]]};l.prototype.sub=function(){return y[b[this.id]]};l.prototype.fracNum=function(){return y[w[this.id]]};l.prototype.fracDen=function(){return y[k[this.id]]};l.prototype.cramp=function(){return 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l=["\\Gamma","\\Delta","\\Theta","\\Lambda","\\Xi","\\Pi","\\Sigma","\\Upsilon","\\Phi","\\Psi","\\Omega"];var o=["\u0131","\u0237","\xa3"];var u=function(e,t,r,s,l){if(n[r][e]&&n[r][e].replace){e=n[r][e].replace}var o=i.getCharacterMetrics(e,t);var u;if(o){var p=o.italic;if(r==="text"){p=0}u=new a.symbolNode(e,o.height,o.depth,p,o.skew,l)}else{typeof console!=="undefined"&&console.warn("No character metrics for '"+e+"' in style '"+t+"'");u=new a.symbolNode(e,0,0,0,0,l)}if(s){if(s.style.isTight()){u.classes.push("mtight")}if(s.getColor()){u.style.color=s.getColor()}}return u};var p=function(e,t,r,a){if(e==="\\"||n[t][e].font==="main"){return u(e,"Main-Regular",t,r,a)}else{return u(e,"AMS-Regular",t,r,a.concat(["amsrm"]))}};var h=function(e,t,r,a,i){if(i==="mathord"){return c(e,t,r,a)}else if(i==="textord"){return u(e,"Main-Regular",t,r,a.concat(["mathrm"]))}else{throw new Error("unexpected type: "+i+" in mathDefault")}};var 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t=[];if(e.value.value!=="."){t.push(h(e.value.value,e.mode))}var r=new n.MathNode("mo",t);if(e.value.mclass==="mopen"||e.value.mclass==="mclose"){r.setAttribute("fence","true")}else{r.setAttribute("fence","false")}return r};m.styling=function(e,t){var r=f(e.value.value,t);var a=new n.MathNode("mstyle",r);var i={display:["0","true"],text:["0","false"],script:["1","false"],scriptscript:["2","false"]};var s=i[e.value.style];a.setAttribute("scriptlevel",s[0]);a.setAttribute("displaystyle",s[1]);return a};m.sizing=function(e,t){var r=f(e.value.value,t);var i=new n.MathNode("mstyle",r);i.setAttribute("mathsize",a.sizingMultiplier[e.value.size]+"em");return i};m.overline=function(e,t){var r=new n.MathNode("mo",[new n.TextNode("\u203e")]);r.setAttribute("stretchy","true");var a=new n.MathNode("mover",[v(e.value.body,t),r]);a.setAttribute("accent","true");return a};m.underline=function(e,t){var r=new n.MathNode("mo",[new n.TextNode("\u203e")]);r.setAttribute("stretchy","true");var a=new 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n.TextNode(t)]);s.setAttribute("encoding","application/x-tex");var l=new n.MathNode("semantics",[i,s]);var o=new n.MathNode("math",[l]);return u(["katex-mathml"],[o])};t.exports=d},{"./ParseError":6,"./buildCommon":10,"./fontMetrics":17,"./mathMLTree":20,"./symbols":23,"./utils":25}],13:[function(e,t,r){var a=e("./buildHTML");var i=e("./buildMathML");var n=e("./buildCommon");var s=e("./Options");var l=e("./Settings");var o=e("./Style");var u=n.makeSpan;var p=function(e,t,r){r=r||new l({});var n=o.TEXT;if(r.displayMode){n=o.DISPLAY}var p=new s({style:n,size:"size5"});var h=i(e,t,p);var c=a(e,p);var m=u(["katex"],[h,c]);if(r.displayMode){return u(["katex-display"],[m])}else{return m}};t.exports=p},{"./Options":5,"./Settings":8,"./Style":9,"./buildCommon":10,"./buildHTML":11,"./buildMathML":12}],14:[function(e,t,r){var a=e("./ParseError");var i=e("./Style");var n=e("./buildCommon");var s=e("./fontMetrics");var l=e("./symbols");var o=e("./utils");var u=n.makeSpan;var 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n=this.fetch();if(-1!==t.endOfExpression.indexOf(n.text))break;if(r&&n.text===r)break;if(e&&ia[n.text]&&ia[n.text].infix)break;var i=this.parseAtom(r);if(!i)break;"internal"!==i.type&&a.push(i)}return"text"===this.mode&&this.formLigatures(a),this.handleInfixNodes(a)},e.handleInfixNodes=function(t){for(var e,r=-1,a=0;a<t.length;a++)if("infix"===t[a].type){if(-1!==r)throw new o("only one infix operator per group",t[a].token);r=a,e=t[a].replaceWith}if(-1!==r&&e){var n,i,s=t.slice(0,r),l=t.slice(r+1);return n=1===s.length&&"ordgroup"===s[0].type?s[0]:{type:"ordgroup",mode:this.mode,body:s},i=1===l.length&&"ordgroup"===l[0].type?l[0]:{type:"ordgroup",mode:this.mode,body:l},["\\\\abovefrac"===e?this.callFunction(e,[n,t[r],i],[]):this.callFunction(e,[n,i],[])]}return t},e.handleSupSubscript=function(e){var r=this.fetch(),a=r.text;this.consume();var n=this.parseGroup(e,!1,t.SUPSUB_GREEDINESS,void 0,void 0,!0);if(!n)throw new o("Expected group after '"+a+"'",r);return n},e.formatUnsupportedCmd=function(t){for(var e=[],r=0;r<t.length;r++)e.push({type:"textord",mode:"text",text:t[r]});var a={type:"text",mode:this.mode,body:e};return{type:"color",mode:this.mode,color:this.settings.errorColor,body:[a]}},e.parseAtom=function(t){var e,r,a=this.parseGroup("atom",!1,null,t);if("text"===this.mode)return a;for(;;){this.consumeSpaces();var n=this.fetch();if("\\limits"===n.text||"\\nolimits"===n.text){if(a&&"op"===a.type){var i="\\limits"===n.text;a.limits=i,a.alwaysHandleSupSub=!0}else{if(!a||"operatorname"!==a.type||!a.alwaysHandleSupSub)throw new o("Limit controls must follow a math operator",n);var s="\\limits"===n.text;a.limits=s}this.consume()}else if("^"===n.text){if(e)throw new o("Double superscript",n);e=this.handleSupSubscript("superscript")}else if("_"===n.text){if(r)throw new o("Double subscript",n);r=this.handleSupSubscript("subscript")}else{if("'"!==n.text)break;if(e)throw new o("Double superscript",n);var l={type:"textord",mode:this.mode,text:"\\prime"},h=[l];for(this.consume();"'"===this.fetch().text;)h.push(l),this.consume();"^"===this.fetch().text&&h.push(this.handleSupSubscript("superscript")),e={type:"ordgroup",mode:this.mode,body:h}}}return e||r?{type:"supsub",mode:this.mode,base:a,sup:e,sub:r}:a},e.parseFunction=function(t,e,r){var a=this.fetch(),n=a.text,i=ia[n];if(!i)return null;if(this.consume(),null!=r&&i.greediness<=r)throw new o("Got function '"+n+"' with no arguments"+(e?" as "+e:""),a);if("text"===this.mode&&!i.allowedInText)throw new o("Can't use function '"+n+"' in text mode",a);if("math"===this.mode&&!1===i.allowedInMath)throw new o("Can't use function '"+n+"' in math mode",a);var s=this.parseArguments(n,i),l=s.args,h=s.optArgs;return this.callFunction(n,l,h,a,t)},e.callFunction=function(t,e,r,a,n){var i={funcName:t,parser:this,token:a,breakOnTokenText:n},s=ia[t];if(s&&s.handler)return s.handler(i,e,r);throw new o("No function handler for "+t)},e.parseArguments=function(t,e){var r=e.numArgs+e.numOptionalArgs;if(0===r)return{args:[],optArgs:[]};for(var a=e.greediness,n=[],i=[],s=0;s<r;s++){var l=e.argTypes&&e.argTypes[s],h=s<e.numOptionalArgs,m=s>0&&!h||0===s&&!h&&"math"===this.mode,c=this.parseGroupOfType("argument to '"+t+"'",l,h,a,m);if(!c){if(h){i.push(null);continue}throw new o("Expected group after '"+t+"'",this.fetch())}(h?i:n).push(c)}return{args:n,optArgs:i}},e.parseGroupOfType=function(t,e,r,a,n){switch(e){case"color":return n&&this.consumeSpaces(),this.parseColorGroup(r);case"size":return n&&this.consumeSpaces(),this.parseSizeGroup(r);case"url":return this.parseUrlGroup(r,n);case"math":case"text":return this.parseGroup(t,r,a,void 0,e,n);case"hbox":var i=this.parseGroup(t,r,a,void 0,"text",n);return i?{type:"styling",mode:i.mode,body:[i],style:"text"}:i;case"raw":if(n&&this.consumeSpaces(),r&&"{"===this.fetch().text)return null;var s=this.parseStringGroup("raw",r,!0);if(s)return{type:"raw",mode:"text",string:s.text};throw new o("Expected raw group",this.fetch());case"original":case null:case void 0:return this.parseGroup(t,r,a,void 0,void 0,n);default:throw new o("Unknown group type as "+t,this.fetch())}},e.consumeSpaces=function(){for(;" "===this.fetch().text;)this.consume()},e.parseStringGroup=function(t,e,r){var a=e?"[":"{",n=e?"]":"}",i=this.fetch();if(i.text!==a){if(e)return null;if(r&&"EOF"!==i.text&&/[^{}[\]]/.test(i.text))return this.consume(),i}var s=this.mode;this.mode="text",this.expect(a);for(var l,h="",m=this.fetch(),c=0,u=m;(l=this.fetch()).text!==n||r&&c>0;){switch(l.text){case"EOF":throw new o("Unexpected end of input in "+t,m.range(u,h));case a:c++;break;case n:c--}h+=(u=l).text,this.consume()}return this.expect(n),this.mode=s,m.range(u,h)},e.parseRegexGroup=function(t,e){var r=this.mode;this.mode="text";for(var a,n=this.fetch(),i=n,s="";"EOF"!==(a=this.fetch()).text&&t.test(s+a.text);)s+=(i=a).text,this.consume();if(""===s)throw new o("Invalid "+e+": '"+n.text+"'",n);return this.mode=r,n.range(i,s)},e.parseColorGroup=function(t){var e=this.parseStringGroup("color",t);if(!e)return null;var r=/^(#[a-f0-9]{3}|#?[a-f0-9]{6}|[a-z]+)$/i.exec(e.text);if(!r)throw new o("Invalid color: '"+e.text+"'",e);var a=r[0];return/^[0-9a-f]{6}$/i.test(a)&&(a="#"+a),{type:"color-token",mode:this.mode,color:a}},e.parseSizeGroup=function(t){var e,r=!1;if(!(e=t||"{"===this.fetch().text?this.parseStringGroup("size",t):this.parseRegexGroup(/^[-+]? *(?:$|\d+|\d+\.\d*|\.\d*) *[a-z]{0,2} *$/,"size")))return null;t||0!==e.text.length||(e.text="0pt",r=!0);var a=/([-+]?) *(\d+(?:\.\d*)?|\.\d+) *([a-z]{2})/.exec(e.text);if(!a)throw new o("Invalid size: '"+e.text+"'",e);var n={number:+(a[1]+a[2]),unit:a[3]};if(!At(n))throw new o("Invalid unit: '"+n.unit+"'",e);return{type:"size",mode:this.mode,value:n,isBlank:r}},e.parseUrlGroup=function(t,e){this.gullet.lexer.setCatcode("%",13);var r=this.parseStringGroup("url",t,!0);if(this.gullet.lexer.setCatcode("%",14),!r)return null;var a=r.text.replace(/\\([#$%&~_^{}])/g,"$1");return{type:"url",mode:this.mode,url:a}},e.parseGroup=function(e,r,n,i,s,l){var h=this.mode;s&&this.switchMode(s),l&&this.consumeSpaces();var m,c=this.fetch(),u=c.text;if(r?"["===u:"{"===u||"\\begingroup"===u){this.consume();var p=t.endOfGroup[u];this.gullet.beginGroup();var d=this.parseExpression(!1,p),f=this.fetch();this.expect(p),this.gullet.endGroup(),m={type:"ordgroup",mode:this.mode,loc:a.range(c,f),body:d,semisimple:"\\begingroup"===u||void 0}}else if(r)m=null;else if(null==(m=this.parseFunction(i,e,n)||this.parseSymbol())&&"\\"===u[0]&&!ba.hasOwnProperty(u)){if(this.settings.throwOnError)throw new o("Undefined control sequence: "+u,c);m=this.formatUnsupportedCmd(u),this.consume()}return s&&this.switchMode(h),m},e.formLigatures=function(t){for(var e=t.length-1,r=0;r<e;++r){var n=t[r],i=n.text;"-"===i&&"-"===t[r+1].text&&(r+1<e&&"-"===t[r+2].text?(t.splice(r,3,{type:"textord",mode:"text",loc:a.range(n,t[r+2]),text:"---"}),e-=2):(t.splice(r,2,{type:"textord",mode:"text",loc:a.range(n,t[r+1]),text:"--"}),e-=1)),"'"!==i&&"`"!==i||t[r+1].text!==i||(t.splice(r,2,{type:"textord",mode:"text",loc:a.range(n,t[r+1]),text:i+i}),e-=1)}},e.parseSymbol=function(){var t=this.fetch(),e=t.text;if(/^\\verb[^a-zA-Z]/.test(e)){this.consume();var r=e.slice(5),n="*"===r.charAt(0);if(n&&(r=r.slice(1)),r.length<2||r.charAt(0)!==r.slice(-1))throw new o("\\verb assertion failed --\n                    please report what input caused this bug");return{type:"verb",mode:"text",body:r=r.slice(1,-1),star:n}}ka.hasOwnProperty(e[0])&&!j[this.mode][e[0]]&&(this.settings.strict&&"math"===this.mode&&this.settings.reportNonstrict("unicodeTextInMathMode",'Accented Unicode text character "'+e[0]+'" used in math mode',t),e=ka[e[0]]+e.substr(1));var i,s=sa.exec(e);if(s&&("i"===(e=e.substring(0,s.index))?e="\u0131":"j"===e&&(e="\u0237")),j[this.mode][e]){this.settings.strict&&"math"===this.mode&&"\xc7\xd0\xde\xe7\xfe".indexOf(e)>=0&&this.settings.reportNonstrict("unicodeTextInMathMode",'Latin-1/Unicode text character "'+e[0]+'" used in math mode',t);var l,h=j[this.mode][e].group,m=a.range(t);if(W.hasOwnProperty(h)){var c=h;l={type:"atom",mode:this.mode,family:c,loc:m,text:e}}else l={type:h,mode:this.mode,loc:m,text:e};i=l}else{if(!(e.charCodeAt(0)>=128))return null;this.settings.strict&&(M(e.charCodeAt(0))?"math"===this.mode&&this.settings.reportNonstrict("unicodeTextInMathMode",'Unicode text character "'+e[0]+'" used in math mode',t):this.settings.reportNonstrict("unknownSymbol",'Unrecognized Unicode character "'+e[0]+'" ('+e.charCodeAt(0)+")",t)),i={type:"textord",mode:"text",loc:a.range(t),text:e}}if(this.consume(),s)for(var u=0;u<s[0].length;u++){var p=s[0][u];if(!wa[p])throw new o("Unknown accent ' "+p+"'",t);var d=wa[p][this.mode];if(!d)throw new o("Accent "+p+" unsupported in "+this.mode+" mode",t);i={type:"accent",mode:this.mode,loc:a.range(t),label:d,isStretchy:!1,isShifty:!0,base:i}}return i},t}();Sa.endOfExpression=["}","\\endgroup","\\end","\\right","&"],Sa.endOfGroup={"[":"]","{":"}","\\begingroup":"\\endgroup"},Sa.SUPSUB_GREEDINESS=1;var Ma=function(t,e){if(!("string"==typeof t||t instanceof String))throw new TypeError("KaTeX can only parse string typed expression");var r=new Sa(t,e);delete r.gullet.macros.current["\\df@tag"];var a=r.parse();if(r.gullet.macros.get("\\df@tag")){if(!e.displayMode)throw new o("\\tag works only in display equations");r.gullet.feed("\\df@tag"),a=[{type:"tag",mode:"text",body:a,tag:r.parse()}]}return a},za=function(t,e,r){e.textContent="";var a=Ta(t,r).toNode();e.appendChild(a)};"undefined"!=typeof document&&"CSS1Compat"!==document.compatMode&&("undefined"!=typeof console&&console.warn("Warning: KaTeX doesn't work in quirks mode. Make sure your website has a suitable doctype."),za=function(){throw new o("KaTeX doesn't work in quirks mode.")});var Aa=function(t,e,r){if(r.throwOnError||!(t instanceof o))throw t;var a=Dt.makeSpan(["katex-error"],[new E(e)]);return a.setAttribute("title",t.toString()),a.setAttribute("style","color:"+r.errorColor),a},Ta=function(t,e){var r=new u(e);try{var a=Ma(t,r);return ke(a,t,r)}catch(e){return Aa(e,t,r)}},Ba={version:"0.12.0",render:za,renderToString:function(t,e){return Ta(t,e).toMarkup()},ParseError:o,__parse:function(t,e){var r=new u(e);return Ma(t,r)},__renderToDomTree:Ta,__renderToHTMLTree:function(t,e){var r=new u(e);try{return function(t,e,r){var a=le(t,ye(r)),n=Dt.makeSpan(["katex"],[a]);return we(n,r)}(Ma(t,r),0,r)}catch(e){return Aa(e,t,r)}},__setFontMetrics:function(t,e){F[t]=e},__defineSymbol:$,__defineMacro:pa,__domTree:{Span:N,Anchor:I,SymbolNode:E,SvgNode:L,PathNode:P,LineNode:D}};e.default=Ba}]).default});
\ No newline at end of file
diff --git a/static/js/staticman.js b/static/js/staticman.js
index 8aea071..98047ef 100644
--- a/static/js/staticman.js
+++ b/static/js/staticman.js
@@ -5,24 +5,30 @@
 
   $('.js-form').submit(function () {
     var form = this;
+    let url = $(this).attr('action');
+    let data = $(this).serialize();
 
     $(form).addClass('form--loading');
 
-    $.ajax({
-      type: $(this).attr('method'),
-      url: $(this).attr('action'),
-      data: $(this).serialize(),
-      contentType: 'application/x-www-form-urlencoded',
-      success: function (data) {
-        showModal('Perfect !', 'Thanks for your comment! It will show on the site once it has been approved. .');
-        $(form).removeClass('form--loading');
-      },
-      error: function (err) {
-        console.log(err);
-        showModal('Error', 'Sorry, there was an error with the submission!');
-        $(form).removeClass('form--loading');
+    var xhr = new XMLHttpRequest();
+    xhr.open("POST", url);
+    xhr.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
+    xhr.setRequestHeader('X-Requested-With', 'XMLHttpRequest');
+    xhr.onreadystatechange = function () {
+      if(xhr.readyState === XMLHttpRequest.DONE) {
+        var status = xhr.status;
+        if (status >= 200 && status < 400) {
+          showModal('Perfect !', 'Thanks for your comment! It will show on the site once it has been approved. .');
+          $(form).removeClass('form--loading');
+        } else {
+          console.error(xhr.statusText);
+          showModal('Error', 'Sorry, there was an error with the submission!');
+          $(form).removeClass('form--loading');
+        }
       }
-    });
+    };
+
+    xhr.send(data);
 
     return false;
   });