first pass at PromoteImageReviewTask
Merge remote-tracking branch 'origin/dev' into jobqueue-promoteimagereviewtask
update PromoteImageReviewTask.class.php to have separate tasks per targetWikiId. upload method verified to work from Special:Promote
remove message about not being able to remove image in dev
Merge remote-tracking branch 'origin/dev' into jobqueue-promoteimagereviewtask
change to use the same instantiation method
use fully qualified namespace names
make special promote additional images memcache keys aware of different image sets based on filter
remove unused function
attempt to delete leftover files from current wiki
remove legacy file handling
Merge remote-tracking branch 'origin/dev' into jobqueue-promoteimagereviewtask

Conflicts:
	maintenance/wikia/fixes/fixVisualizationImage.php
Merge remote-tracking branch 'origin/PLA-1552-specialpromote-cache-problem' into jobqueue-promoteimagereviewtask
remove putting command output in my home dir. oops.
enabling PromoteImageReviewTask
Merge remote-tracking branch 'origin/dev' into jobqueue-promoteimagereviewtask
Merge branch 'jobqueue-promoteimagereviewtask' into jobqueue-migration-removals
remove references to legacy job BloglistDeferredPurgeJob
remove legacy job BlogTask