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
charts for dashboard

  [PT 49574083] interview chart
  [PT 49574095] offer chart
[BUG 49897123] fix crash issue
add filters for controller entry
fix some naming issues
[PT 49574095] change offer chart data source
Merge pull request #153 from Chunjie/master

charts for dashboard
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
charts for dashboard

  [PT 49574083] interview chart
  [PT 49574095] offer chart
[PT 49430765] generalized solution for data storage layer

    stores both photos and resumes