Add bookmark_cleanup task
Add bookmark_cleanup task

nulib/avalon,avalonmediasystem/avalon,ualbertalib/avalon,uvalib/avalon,ualbertalib/avalon,uvalib/avalon,avalonmediasystem/avalon,nulib/avalon,uvalib/avalon,avalonmediasystem/avalon,avalonmediasystem/avalon,uvalib/avalon,nulib/avalon,ualbertalib/avalon,nulib/avalon,ualbertalib/avalon