Draggable Tests: Add test coverage for supported options
Draggable Tests: Style Sweep
Draggable Tests: Fix snap test failures in IE8
Draggable Tests: Fix containment tests
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.