Sortable: Copy the src of the original item when creating a placeholder from an image. Fixes #5129 - Sortable: Unable to use an image as a placeholder in Firefox.
Sortable tests: Added alt attributes to images.
Draggable: Fix border containment. Fixed #5569 - Draggable: Containment incorrectly calculates padding and border
Draggable: Account for descendants in handle.
Removed guard against duplicate loading. Use safe references to original functions when proxying, don't rename originals.
Sortable: Skip items that are not at the same line as the cursor when floating. Fixes #8792: Issue with floated items in connected lists.
Sortable: Skip triggering over event if it's alreay over the continer. Fixes #9041: the over event fires on every pixel movement
Sortable Tests: Add tests to support #9041 and #8792
Draggable tests: Don't use .on().
CSS Framework: Add ui-icon-blank class for an icon with no image. Fixes #9150 - CSS Framework: Add ui-icon-blank.

This essentially reverts 1fe06f03fac30ce76b87eab8c5a9acc72becd587 and the fix for #5659.
Widget: Stop setting ui-state-disabled and aria by default on setting disabled option. 
Fixes #5973 - Resizable: disabled should not have the ui-state-disabled class or aria attribute aria-disabled
Fixes #5974 - Draggable: disabled should not have the ui-state-disabled class or aria attribute aria-disabled
Fixes #6039 - Droppable : disabled should not have ui-state-disabled
Build: Migrate to grunt 0.4. Rename to Gruntfile, upgrade to newer grunt-css and grunt-html, update custom tasks. Drop qunit-junit plugin, not worth the trouble. Update release script to run grunt-prepare after npm-install.
Build: Switch from grunt-css to the equivalent grunt-contrib tasks
Build: Don't call DB's grunt-prepare task, not needed anymore
Build: Update to grunt-contrib-qunit 0.2.0 to get latest PhantomJS
Build: Fix the key for the 'all' subtask for compare_size. Stills needs a new version of grunt-compare-size to actuall work
Upgrade to grunt-git-authors 1.2.0.
Updated AUTHORS.txt.
Updated mailmap.
Sortable: Only animate along the specified axis when reverting. Fixes #7415 - Sortable: Incorrect revert animation with axis: 'y'.