add data provider for action items
Merge remote-tracking branch 'vmw-tmpst/master' into action_items
add spec for action items backend
add filter for each action item entry
Merge remote-tracking branch 'vmw-tmpst/master' into action_items

Conflicts:
	app/models/interview.rb
	app/models/opening_candidate.rb
add filters for controller entry
fix some naming issues
Merge remote-tracking branch 'vmw-tmpst/master' into action_items

Conflicts:
	app/models/interview.rb
Merge pull request #154 from whywhy36/action_items

Action items backends