Create html prototypes for stats and charts Issue2147
Some modifications to prototype
Add section field in the list of fields for enrolling students
Merge branch 'master' into Issue2163
Add view selector, refactor jsp - move code to java
update comment entity

with:
1. add persistent property -> CommentRecipientType recipientType (enum: PERSON, TEAM, SECTION, COURSE)
2. rename receiverEmail to recipients, with type changed from String to Set<String>
3. add commentAttributesTest and make it green
Enable groupByTeam checkbox
Merge branch 'Issue2147-StatsPrototypes' into FeedbackSessions
Add collapse/expand panels button and script
Filter the result in enroll result page
update commentsDb and make commentsDbTest green
Fix test cases due to changes
starting to create the student profile page
Done view for - By Questions.
Merge branch 'master' into FeedbackSessions
[Fixes#72589736]instructor can view results by question
Fix some remaining test cases
Fix bug in mistaking update status for students
Merge branch 'master' into Issue2163
Update UI Test for Enroll Page to include testing for section field