Video (bugid 98404): RealGravity - add sugar media to ingestion
updating tests with mock window object
Video (bugid 98404): removed PopSugar from RealGravity.
adjustment to unit test
Merge pull request #462 from Wikia/history-api-js-tests

History api js tests
Maintenance script to change <videogallery> to <gallery>

BugID: 29471
New scripts to update attribution.

BugID: 48491
Removed unused global variable.

BugID: 98701
New script to remove the description header from video file pages.

BugID: 98982
Video (bugid 96342): RelatedVideos - show new flag
Merge pull request #486 from Wikia/VideoSprint19

Video sprint19