add recent actions button in adminSearchPage for searched instructors
[2550]Add view recent actions link in adminSearchPage for instructor

fixes #2550
1. count unique student and instructor by email for per institute
2. remove unused method
[2554]Student/instructor count per institute should be based on unique emails

fixes #2554
Show normalized peer contribution ratio to instructor instead of actual submitted values.
Merge remote-tracking branch 'origin/master' into Issue2530
Move photo tests to bottom of InstructorFeedbackResultsPageUiTest and fix broken tests
Modify test data to ensure changes are tested
Remove println
Handle anonymity
Fix tests
[2530] instructorFeedbackResults: instructor should see normalized contribution values