[48381403] code skeleton for schedule interviews page

Signed-off-by: Henry Chen <hchen@vmware.com>
Merge branch 'master' of https://github.com/vmw-tmpst/heroapp-LetsHire into schedule_interviews
[48381403] code skeleton for 'add/delete' interview table line

Signed-off-by: Henry Chen <hchen@vmware.com>
Merge branch 'master' of https://github.com/vmw-tmpst/heroapp-LetsHire into schedule_interviews
add data provider for action items
Merge remote-tracking branch 'vmw-tmpst/master' into action_items
[48381403] code skeleton for 'add/delete' interview table line

In this part, API code skelenton for update multiple interviews is almost ready.

to-do-list:
1 interviewers' selection and save;
2 error handling.

Signed-off-by: Henry Chen <hchen@vmware.com>
Merge branch 'master' of https://github.com/vmw-tmpst/heroapp-LetsHire into sched_interviews
define default order for model's listing

Signed-off-by: Henry Chen <hchen@vmware.com>
[48381403] schedule_at datatime display/selection support

Also code refactor code that's similar to element editing.

Signed-off-by: Henry Chen <hchen@vmware.com>
Merge pull request #151 from wgu/master

[49574797] add new icon buttons for opening list & other similar pages
Merge branch 'master' of https://github.com/vmw-tmpst/heroapp-LetsHire into sched_interviews
Merge pull request #148 from Henry-CF/sched_interviews

init commit for schedule interviews
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