AUI-1575 Create unit test for _unescapeEntitiesUsingDom
AUI-1575 - Source formatting
AUI-1623 gulp-release doesn't include all necessary css files on zip output

Doing this without gulpif since it seems to not be passing the whole stream to the pipe (apparently a bug in ternary-stream's merge-stream usage).
AUI-1623 gulp-release doesn't include all necessary css files on zip output

This takes too long as a separate task, using gulp-replace's skip-binary instead.
Merge branch 'master' into master-deprecated