Account Restore
Changing delete existing data
Merge branch 'dev' into Speed_up
Remove cascading for deleting existing data
Changing
Add persistentAll functions
Fix some bugs
Fix error
Delete data before restoring
Fix questionadd test case
Fix some test cases
Fix test case
Merge branch 'dev' into Section
Change enroll info format
Merge branch 'dev' into Speed_up
Change restore
Update enroll result headings
Change hint for filter by question text box
Fixed NaN
Merge branch 'dev' into Speed_up