The blocker tasks define the tasks that must be completed to consider this goal done. There are more related tasks filed at Project-Management
Yesterday we had Engineering Community team quarterly review. We agreed that the top priority we set for October-December 2014 had been accomplished. @Aklapper is now driving the next phase, consolidate Phabricator as project management tool. You can check the measures of success of this goal in the related slide. Proper Phabricator tasks will be coming soon.