[t3001] Readd butteruid being appending onto sources for Sequencer Clips
Bug #3449 - Switch to unified GA account
Bug #856421 - Run Travis CI tests on node v0.8 and v0.10
Bug #3441 - Remove unused util/xhr dependencies
Bug #3441 - Add new util/xhr2 module
Bug #3441 - Convert butter to use xhr2
Bug #3441 - Convert crashreporter to use xhr2
Bug #3441 - Convert dialog/dialogs/feedback to use xhr2
Bug #3441 - Convert editor/editor to use xhr2
Bug #3441 - Convert cornfield/module to use xhr2
Bug #3441 - Server should only parse json
Bug #3441 - Remove deprecated util/xhr
Bug #3441 - Rename util/xhr2 -> util/xhr
Added Optimizely script tag.

Closes gh-1629.
Bug #855940 - Update newrelic to v0.9.20
Bug #3375 - Switch to html5-lint npm module
jade patch to undo multiply-sanitized html entities
[#3260] Submodule update for soundcloud fix
Butter v1.0.25
Bug #2945
1. Stop the draggable update timeout if the track event which was originally dragged is deleted.
2. Call __onDraggableMouseUp manually due to Chrome bug.
3, Fixed bug in removal of mouseup listeners for draggable elements.