VE-634: track time to init when accessing VE directly from the URI via veaction=edit
Merge branch 'dev' into VE-634
VE-634: jshint
VE-634: add tracking for media dialog insertion time.
VE-634: add tracking for source dialog parsing and serialization time.
VE-634: add tracking for save dialog behaviors and publish errors.
Merge branch 've-sprint-9' into VE-634
Merge pull request #2488 from Wikia/VE-634

VE-634: add tracking calls for performance measurements