sample data now has accounts for students for completeness
[fixes #74582872]
Merge branch '74582872' into rc
Merge branch 'dev' into rc
Merge branch 'dev' into Feature-OmniComment
apply quick fix to some styling issues
added empty tests
Merge branch 'dev' into Feature-OmniComment

Conflicts:
	src/main/webapp/jsp/studentComments.jsp
Fix tooltips for copy session
displayedName: more strict checking for displayedName
Merge branch 'Feature-OmniComment' into 75008580
sanitize before saving to db for instructor entity
Merge branch 'dev' into rc
Fix bug after searching for no results
Merge branch 'Search_Student_List_Bug' into rc
Merge branch 'rc' of https://github.com/TEAMMATES/repo into rc
remove unnecessary sanitization
Merge branch 'dev' into 75008580
Merge branch 'rc' into 75008580
change of UI style