Update info to be more meaningful for unregistered studentn in sample data
search document for student not created for sample data #2304
Fix duplicate email suffix in test data
Fix table sort for student list
rephrasing in the instructorHelp page
Fixes table sort issue
Handles expected error gracefully in the Action
InstructorStudentListPageUiTest waits for the profile image to be loaded before checking Html
Merge branch 'rc' of https://github.com/TEAMMATES/repo into rc
Issue 2311
Issue 2308
Merge branch 'rc' of https://github.com/TEAMMATES/repo into rc
Merge branch 'rc' into AccessControl