diff -r 20e00017dd60 -r 10974bff4dae web/res/js/jquery.mousewheel.js
--- a/web/res/js/jquery.mousewheel.js	Fri Dec 11 18:11:13 2015 +0100
+++ b/web/res/js/jquery.mousewheel.js	Tue Dec 29 13:25:14 2015 +0100
@@ -1,9 +1,9 @@
-/*! Copyright (c) 2013 Brandon Aaron (http://brandon.aaron.sh)
- * Licensed under the MIT License (LICENSE.txt).
+/*!
+ * jQuery Mousewheel 3.1.13
  *
- * Version: 3.1.6
- *
- * Requires: jQuery 1.2.2+
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
  */
 
 (function (factory) {
@@ -31,8 +31,8 @@
         }
     }
 
-    $.event.special.mousewheel = {
-        version: '3.1.6',
+    var special = $.event.special.mousewheel = {
+        version: '3.1.12',
 
         setup: function() {
             if ( this.addEventListener ) {
@@ -42,6 +42,9 @@
             } else {
                 this.onmousewheel = handler;
             }
+            // Store the line height and page height for this particular element
+            $.data(this, 'mousewheel-line-height', special.getLineHeight(this));
+            $.data(this, 'mousewheel-page-height', special.getPageHeight(this));
         },
 
         teardown: function() {
@@ -52,6 +55,27 @@
             } else {
                 this.onmousewheel = null;
             }
+            // Clean up the data we added to the element
+            $.removeData(this, 'mousewheel-line-height');
+            $.removeData(this, 'mousewheel-page-height');
+        },
+
+        getLineHeight: function(elem) {
+            var $elem = $(elem),
+                $parent = $elem['offsetParent' in $.fn ? 'offsetParent' : 'parent']();
+            if (!$parent.length) {
+                $parent = $('body');
+            }
+            return parseInt($parent.css('fontSize'), 10) || parseInt($elem.css('fontSize'), 10) || 16;
+        },
+
+        getPageHeight: function(elem) {
+            return $(elem).height();
+        },
+
+        settings: {
+            adjustOldDeltas: true, // see shouldAdjustOldDeltas() below
+            normalizeOffset: true  // calls getBoundingClientRect for each event
         }
     };
 
@@ -72,7 +96,9 @@
             delta      = 0,
             deltaX     = 0,
             deltaY     = 0,
-            absDelta   = 0;
+            absDelta   = 0,
+            offsetX    = 0,
+            offsetY    = 0;
         event = $.event.fix(orgEvent);
         event.type = 'mousewheel';
 
@@ -93,21 +119,52 @@
 
         // New school wheel delta (wheel event)
         if ( 'deltaY' in orgEvent ) {
-          deltaY = orgEvent.deltaY * -1;
-          delta  = deltaY;
+            deltaY = orgEvent.deltaY * -1;
+            delta  = deltaY;
         }
         if ( 'deltaX' in orgEvent ) {
-          deltaX = orgEvent.deltaX;
-          if ( deltaY === 0 ) { delta  = deltaX * -1; }
+            deltaX = orgEvent.deltaX;
+            if ( deltaY === 0 ) { delta  = deltaX * -1; }
         }
 
         // No change actually happened, no reason to go any further
         if ( deltaY === 0 && deltaX === 0 ) { return; }
 
+        // Need to convert lines and pages to pixels if we aren't already in pixels
+        // There are three delta modes:
+        //   * deltaMode 0 is by pixels, nothing to do
+        //   * deltaMode 1 is by lines
+        //   * deltaMode 2 is by pages
+        if ( orgEvent.deltaMode === 1 ) {
+            var lineHeight = $.data(this, 'mousewheel-line-height');
+            delta  *= lineHeight;
+            deltaY *= lineHeight;
+            deltaX *= lineHeight;
+        } else if ( orgEvent.deltaMode === 2 ) {
+            var pageHeight = $.data(this, 'mousewheel-page-height');
+            delta  *= pageHeight;
+            deltaY *= pageHeight;
+            deltaX *= pageHeight;
+        }
+
         // Store lowest absolute delta to normalize the delta values
         absDelta = Math.max( Math.abs(deltaY), Math.abs(deltaX) );
+
         if ( !lowestDelta || absDelta < lowestDelta ) {
-          lowestDelta = absDelta;
+            lowestDelta = absDelta;
+
+            // Adjust older deltas if necessary
+            if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
+                lowestDelta /= 40;
+            }
+        }
+
+        // Adjust older deltas if necessary
+        if ( shouldAdjustOldDeltas(orgEvent, absDelta) ) {
+            // Divide all the things by 40!
+            delta  /= 40;
+            deltaX /= 40;
+            deltaY /= 40;
         }
 
         // Get a whole, normalized value for the deltas
@@ -115,10 +172,23 @@
         deltaX = Math[ deltaX >= 1 ? 'floor' : 'ceil' ](deltaX / lowestDelta);
         deltaY = Math[ deltaY >= 1 ? 'floor' : 'ceil' ](deltaY / lowestDelta);
 
+        // Normalise offsetX and offsetY properties
+        if ( special.settings.normalizeOffset && this.getBoundingClientRect ) {
+            var boundingRect = this.getBoundingClientRect();
+            offsetX = event.clientX - boundingRect.left;
+            offsetY = event.clientY - boundingRect.top;
+        }
+
         // Add information to the event object
         event.deltaX = deltaX;
         event.deltaY = deltaY;
         event.deltaFactor = lowestDelta;
+        event.offsetX = offsetX;
+        event.offsetY = offsetY;
+        // Go ahead and set deltaMode to 0 since we converted to pixels
+        // Although this is a little odd since we overwrite the deltaX/Y
+        // properties with normalized deltas.
+        event.deltaMode = 0;
 
         // Add event and delta to the front of the arguments
         args.unshift(event, delta, deltaX, deltaY);
@@ -134,7 +204,18 @@
     }
 
     function nullLowestDelta() {
-      lowestDelta = null;
+        lowestDelta = null;
+    }
+
+    function shouldAdjustOldDeltas(orgEvent, absDelta) {
+        // If this is an older event and the delta is divisable by 120,
+        // then we are assuming that the browser is treating this as an
+        // older mouse wheel event and that we should divide the deltas
+        // by 40 to try and get a more usable deltaFactor.
+        // Side note, this actually impacts the reported scroll distance
+        // in older browsers and can cause scrolling to be slower than native.
+        // Turn this off by setting $.event.special.mousewheel.settings.adjustOldDeltas to false.
+        return special.settings.adjustOldDeltas && orgEvent.type === 'mousewheel' && absDelta % 120 === 0;
     }
 
 }));