Revert "Diff headers made sticky."

This reverts commit 6eb85b1a.

app/assets/javascripts/application.js.coffee

@@ -15,7 +15,6 @@
 #= require jquery.atwho
 #= require jquery.scrollTo
 #= require jquery.blockUI
-#= require jquery.sticky
 #= require turbolinks
 #= require jquery.turbolinks
 #= require bootstrap

app/assets/javascripts/diff.js.coffee

@@ -34,8 +34,7 @@ class Diff
       $.get(link, params, (response) =>
         target.parent().replaceWith(response)
       )
-    ).ready =>
-      $(".diff-header").sticky {responsiveWidth:true, getWidthFrom: ".diff-file"}
+    )
 
   lineNumbers: (line) ->
     return ([0, 0]) unless line.children().length

vendor/assets/javascripts/jquery.sticky.js

-// Sticky Plugin v1.0.0 for jQuery
-// =============
-// Author: Anthony Garand
-// Improvements by German M. Bravo (Kronuz) and Ruud Kamphuis (ruudk)
-// Improvements by Leonardo C. Daronco (daronco)
-// Created: 2/14/2011
-// Date: 2/12/2012
-// Website: http://labs.anthonygarand.com/sticky
-// Description: Makes an element on the page stick on the screen as you scroll
-//       It will only set the 'top' and 'position' of your element, you
-//       might need to adjust the width in some cases.
-
-(function($) {
-  var defaults = {
-      topSpacing: 0,
-      bottomSpacing: 0,
-      className: 'is-sticky',
-      wrapperClassName: 'sticky-wrapper',
-      center: false,
-      getWidthFrom: '',
-      responsiveWidth: false
-    },
-    $window = $(window),
-    $document = $(document),
-    sticked = [],
-    windowHeight = $window.height(),
-    scroller = function() {
-      var scrollTop = $window.scrollTop(),
-        documentHeight = $document.height(),
-        dwh = documentHeight - windowHeight,
-        extra = (scrollTop > dwh) ? dwh - scrollTop : 0;
-
-      for (var i = 0; i < sticked.length; i++) {
-        var s = sticked[i],
-          elementTop = s.stickyWrapper.offset().top,
-          etse = elementTop - s.topSpacing - extra;
-
-        if (scrollTop <= etse) {
-          if (s.currentTop !== null) {
-            s.stickyElement
-              .css('position', '')
-              .css('top', '');
-            s.stickyElement.trigger('sticky-end', [s]).parent().removeClass(s.className);
-            s.currentTop = null;
-          }
-        }
-        else {
-          var newTop = documentHeight - s.stickyElement.outerHeight()
-            - s.topSpacing - s.bottomSpacing - scrollTop - extra;
-          if (newTop < 0) {
-            newTop = newTop + s.topSpacing;
-          } else {
-            newTop = s.topSpacing;
-          }
-          if (s.currentTop != newTop) {
-            s.stickyElement
-              .css('position', 'fixed')
-              .css('top', newTop);
-
-            if (typeof s.getWidthFrom !== 'undefined') {
-              s.stickyElement.css('width', $(s.getWidthFrom).width());
-            }
-
-            s.stickyElement.trigger('sticky-start', [s]).parent().addClass(s.className);
-            s.currentTop = newTop;
-          }
-        }
-      }
-    },
-    resizer = function() {
-      windowHeight = $window.height();
-
-      for (var i = 0; i < sticked.length; i++) {
-        var s = sticked[i];
-        if (typeof s.getWidthFrom !== 'undefined' && s.responsiveWidth === true) {
-          s.stickyElement.css('width', $(s.getWidthFrom).width());
-        }
-      }
-    },
-    methods = {
-      init: function(options) {
-        var o = $.extend({}, defaults, options);
-        return this.each(function() {
-          var stickyElement = $(this);
-
-          var stickyId = stickyElement.attr('id');
-          var wrapperId = stickyId ? stickyId + '-' + defaults.wrapperClassName : defaults.wrapperClassName 
-          var wrapper = $('<div></div>')
-            .attr('id', stickyId + '-sticky-wrapper')
-            .addClass(o.wrapperClassName);
-          stickyElement.wrapAll(wrapper);
-
-          if (o.center) {
-            stickyElement.parent().css({width:stickyElement.outerWidth(),marginLeft:"auto",marginRight:"auto"});
-          }
-
-          if (stickyElement.css("float") == "right") {
-            stickyElement.css({"float":"none"}).parent().css({"float":"right"});
-          }
-
-          var stickyWrapper = stickyElement.parent();
-          stickyWrapper.css('height', stickyElement.outerHeight());
-          sticked.push({
-            topSpacing: o.topSpacing,
-            bottomSpacing: o.bottomSpacing,
-            stickyElement: stickyElement,
-            currentTop: null,
-            stickyWrapper: stickyWrapper,
-            className: o.className,
-            getWidthFrom: o.getWidthFrom,
-            responsiveWidth: o.responsiveWidth
-          });
-        });
-      },
-      update: scroller,
-      unstick: function(options) {
-        return this.each(function() {
-          var unstickyElement = $(this);
-
-          var removeIdx = -1;
-          for (var i = 0; i < sticked.length; i++)
-          {
-            if (sticked[i].stickyElement.get(0) == unstickyElement.get(0))
-            {
-                removeIdx = i;
-            }
-          }
-          if(removeIdx != -1)
-          {
-            sticked.splice(removeIdx,1);
-            unstickyElement.unwrap();
-            unstickyElement.removeAttr('style');
-          }
-        });
-      }
-    };
-
-  // should be more efficient than using $window.scroll(scroller) and $window.resize(resizer):
-  if (window.addEventListener) {
-    window.addEventListener('scroll', scroller, false);
-    window.addEventListener('resize', resizer, false);
-  } else if (window.attachEvent) {
-    window.attachEvent('onscroll', scroller);
-    window.attachEvent('onresize', resizer);
-  }
-
-  $.fn.sticky = function(method) {
-    if (methods[method]) {
-      return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
-    } else if (typeof method === 'object' || !method ) {
-      return methods.init.apply( this, arguments );
-    } else {
-      $.error('Method ' + method + ' does not exist on jQuery.sticky');
-    }
-  };
-
-  $.fn.unstick = function(method) {
-    if (methods[method]) {
-      return methods[method].apply(this, Array.prototype.slice.call(arguments, 1));
-    } else if (typeof method === 'object' || !method ) {
-      return methods.unstick.apply( this, arguments );
-    } else {
-      $.error('Method ' + method + ' does not exist on jQuery.sticky');
-    }
-
-  };
-  $(function() {
-    setTimeout(scroller, 0);
-  });
-})(jQuery);