1.sanitize attributes before saving
2.fix related test
1.implement adminAccountDeleteActionTest
2.add status message test
1.implement adminAccountDetailsPageActionTest
2.add status message test for this
1.implement adminAccountManagementPageActionTest
2.add status message test for this
Sped up all Db Tests. Now they run in less than 6 secs in total
Merge branch 'Developer-Utilities' into 74193950
delete unused images
completed optimisation for all DbTests
speeding up logic tests
sped up CoursesLogicTest
sped up SessionsLogicTest
1.add status test for some action test
2.remove TODO for tests that already have status test
3.implement some test which were previously empty
4.fix instructorHomePageUiTest by adding mission "restoreTestDataOnServer(testData)" command
fixed dependency problem. sped up studentsLogicTest
sped up instructorsLogicTest
sped up feedbackQuestionsLogicTest
sped up feedbackResponsesLogicTest
sped up submissionLogicTest
sped up EvalEmailTaskQueueTest
sped up FBSessionEmailQueueTest
sped up SubmissionsAdjustmentTest