[3349] Fix statsd prefixes...again
Bug #3318 - Move popcorn.js config into a separate file
Bug #3318 - Have butter.js load Popcorn via require
Bug #3318 - Move butter.js where it belongs
No Bug - Fix lint error
Butter v1.0.19
Bug #3357 - Revert #3305 which broke old projects
Bug #3357 - Revert the reversion

This reverts commit f2c9c8c3a3d6399c6cae320b1336e05db1a5e1af.
Bug #3357 - Add a Popcorn() shim for old projects
Butter v1.0.20
Bug #3347 - Upgrade to RequireJS v2.1.5 and Almond v0.2.5
No Bug - Remove unused uglify-js dependency
[#3200] Error dialog on media gallery.
[#3200] Css nit.