Wiki blacklist support
excluded wikis refactor
licenced wikis from WF
CON-1809 | Fix overlapping of anchored element
CON-1809 | Fix
change AsyncTaskList to use generic external task when executing tasks
send created_by as an arg rather than kwarg, and don't json_decode non json encoded things
Refactor blacklist to separate filter
remove leftover comment
remove unused constant
make comment more verbose
Merge remote-tracking branch 'origin/dev' into jobq-generic-external

Conflicts:
	includes/wikia/tasks/TaskRunner.class.php
	maintenance/wikia/task_runner.php
set constructor wiki id value from config, rather than global
VID-2082 VideoHandlerController::getVideoList cache in memc and varnish
CON-1809 | Some changes after CR
Address feedback from @macbre
Use anonymous function in-place
Script to query memcache.  Different from stock mcc.php as this one queries
against F::app()->wg->Memc which may be different than how mcc.php constructs
its client.  Also, this verion allows grabbing config info.
VID-2015 loading media gallery assets in main oasis group
VID-2044 code cleanup before I start the task
VID-2044 adding some bucky calls to wall