Initial code for contribution question
front-end for adding contribution question
Instructor can add contribution question
eval publish and unpublish actions
Merge branch 'FeedbackSessions' into 72854604
Fixes for contribution qn visibility options
fix for contribution qn visibility - recipient can see recipient name checkbox
Merge branch 'AccessControl' into 73683892
Merge branch 'AccessControl' into 73657780
remove of unused .idea folder
Merge branch 'AccessControl' into 73683892
Add contribution question submission templates
Merge branch 'master' into 72854604

Conflicts:
	src/main/java/teammates/ui/controller/FeedbackSubmissionEditSaveAction.java
Can submit contribution question response
add validation rules for contribution question
Add additional info to show question type. minor change to question name.
Change contribution question csv answer to use string, equal share format.
fixing the bug with adding instructor
added more disabled in studentlist and coursedetails
Initial code for contribution question stats