Removed an unused method
Added full coverage for 2 functions. Changed a TestHelper function to expand its flexibility
created a new test file to cover the FRCDb completely. Added a few data to the typical bundle for better coverage
Merge branch 'master' of https://github.com/TEAMMATES/repo into Issue1989
[1989] Clean up FeedbackResponseCommentsDb

fixes #1989
changed Assumption failure to throwing exception and made corresponding changes. completed 100% coverage
changed test cases to fit the throwing of EDNEException rather than Assert,fail()
Merge branch 'master' of https://github.com/TEAMMATES/repo into Issue2004