Revert "Revert "removing unused extension extensions/Translate""

This reverts commit 1070e0f96e5a569ea80d615b0953350fa581fafa.
Revert "Revert "removing unused extension Contest""

This reverts commit a9fac8c1d094934ee1bbfdd1a2a6e6c1c1e7905a.
Revert "Revert "removing unused extension extensions/CentralAuth""

This reverts commit db8bb76ad4306d3bf64873083fa65ed70cddcbb2.
Merge branch 'jobqueue' into jobqueue-migration
commit changes (still doesn't work)
Merge remote-tracking branch 'origin/dev' into jobqueue-migration
enabling BloglistDeferredPurgeJob, BlogTask, CreatePdfThumbnailsJob to run under the new job queue system
"remove" unused job DoubleRedirectJob
PLATFORM-158 Upgrade UserRollbackTask to new JobQueue
Merge pull request #3615 from Wikia/jobqueue-migration-userrollbacktask

PLATFORM-158 Upgrade UserRollbackTask to new JobQueue
WIP UserRenameTask migration
Merge branch 'dev' into jobqueue-migration
PLATFORM-75 Complete UserRenameTask migration
PLATFORM-75 Move `abuse_filter_log` table def to hook
send internal traffic back to internal, similar to preview/verify
Merge pull request #3645 from Wikia/jobqueue-migration-userrenametask

Jobqueue migration userrenametask
PLATFORM-75 Enable UserRenameTask and UserRollbackTask
Merge pull request #3653 from Wikia/jobqueue-migration-enableuserstuff

Jobqueue migration enableuserstuff
ADEN-1158 Wikia Bar 2 Ad
CON-1129: Added tracking to Alliance template