Merge branch 'css-logo-animation' into 'master'

Change logo animation to CSS

## What does this MR do?
Converts the tanuki logo animation from javascript to CSS. You can now animate the tanuki svg logo by adding the CSS Class `animate`to it.

## Are there points in the code the reviewer needs to double check?
Just need to double check for browser compatibility

## Why was this MR needed?

*  Using CSS for simple animations is a best practice (Optimizes DOM, uses GPU to do animation rather than CPU)
*  Happy DOM :balloon: 

## What are the relevant issue numbers?
Closes #20607 

## Screenshots (if relevant)
Before DOM
![8BrOJAqT4U](/uploads/705a3c7b53c45d32d435cafecfc958bd/8BrOJAqT4U.gif)

After DOM
![Screen_Shot_2016-08-03_at_10.30.08_PM](/uploads/e82d9b63501def4dc4e67a5659863680/Screen_Shot_2016-08-03_at_10.30.08_PM.png)

Before
![JnEgliIIVO](/uploads/39aaec48fd3e193f20cf455371ea2d13/JnEgliIIVO.gif)

After (Basically the same, hard to tell in my gif though because it was hard to get the timings right on the recording)
![fvLeXxmp3U](/uploads/058cf15fffed4be549af2e963eca4412/fvLeXxmp3U.gif)

## Does this MR meet the acceptance criteria?

- [x] [CHANGELOG](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CHANGELOG) entry added
- Tests
  - [x] All builds are passing
- [x] Conform by the [style guides](https://gitlab.com/gitlab-org/gitlab-ce/blob/master/CONTRIBUTING.md#style-guides)
- [x] Branch has no merge conflicts with `master` (if you do - rebase it please)
- [x] [Squashed related commits together](https://git-scm.com/book/en/Git-Tools-Rewriting-History#Squashing-Commits)

See merge request !5655

1 files changed, 2 insertions, 40 deletions

diff --git a/app/assets/javascripts/logo.js b/app/assets/javascripts/logo.js
index 218f24fe908..e5d4fd44c96 100644
--- a/app/assets/javascripts/logo.js
+++ b/app/assets/javascripts/logo.js
@@ -1,50 +1,12 @@
 (function() {
-  var clearHighlights, currentTimer, defaultClass, delay, firstPiece, pieceIndex, pieces, start, stop, work;
-
   Turbolinks.enableProgressBar();
 
-  defaultClass = 'tanuki-shape';
-
-  pieces = ['path#tanuki-right-cheek', 'path#tanuki-right-eye, path#tanuki-right-ear', 'path#tanuki-nose', 'path#tanuki-left-eye, path#tanuki-left-ear', 'path#tanuki-left-cheek'];
-
-  pieceIndex = 0;
-
-  firstPiece = pieces[0];
-
-  currentTimer = null;
-
-  delay = 150;
-
-  clearHighlights = function() {
-    return $("." + defaultClass + ".highlight").attr('class', defaultClass);
-  };
-
   start = function() {
-    clearHighlights();
-    pieceIndex = 0;
-    if (pieces[0] !== firstPiece) {
-      pieces.reverse();
-    }
-    if (currentTimer) {
-      clearInterval(currentTimer);
-    }
-    return currentTimer = setInterval(work, delay);
+    $('.tanuki-logo').addClass('animate');
   };
 
   stop = function() {
-    clearInterval(currentTimer);
-    return clearHighlights();
-  };
-
-  work = function() {
-    clearHighlights();
-    $(pieces[pieceIndex]).attr('class', defaultClass + " highlight");
-    if (pieceIndex === pieces.length - 1) {
-      pieceIndex = 0;
-      return pieces.reverse();
-    } else {
-      return pieceIndex++;
-    }
+    $('.tanuki-logo').removeClass('animate');
   };
 
   $(document).on('page:fetch', start);