Fixed webpage redirection of student feedback submission from student home page to student feedback submission edit page when an user input error occurs.
Re-factored regkey == null with isUserLoggedIn and updated comments for StudentFeedbackSubmissionEditSaveAction::createSpecificRedirectResult()
Added cases for webpage redirection of student feedback submission on whether student is registered/unregistered and error occurence
Merge branch 'master' into Issue2300
Refactor if-else statement in StudentFeedbackSubmissionEditSaveAction:createSpecificRedirectResult()
Refactor code to match with the comments and improved the readability of if-else statement
Refactor if-else statement to improve readability
Fixes for wrong recipient in sample data json
Fixes for html files after correcting wrong recipients in sample data
Added tests for webpage redirection when unregistered student submitted session's responses via the given link
Merge branch 'master' into Issue2780
Merge branch 'master' into Issue2300
[2300] Redirect back to feedback submission page if isError==true when submitting responses
Created another course for unregistered student session
[2798] Broken Feedback Session Logic Test, student details missing
Merge branch 'master' into Issue2780
Merge remote-tracking branch 'origin/master' into Issue2757

Conflicts:
	src/test/resources/data/FeedbackSessionQuestionTypeTest.json
[2780] Wrong recipient in sample data json
Add FeedbackRubricQuestionUiTest into testing.xml
Fix rubric UI tests