Added option for instructors to prevent duplicate points
Modified front-end check for duplicate values
Fixed UI and phrasing issues. Added tooltip for instructors.
Updated test html resources for new checkbox and other UI changes
Updated tooltip for better clarity.
Added test case to InstructorFeedbackSubmitPageUiTest
Disabled checkbox for uneven distribution option
Modified isChangesRequiresResponseDeletion to delete responses if uneven distribution option is changed
New question form should show correct tooltip and text
Merge branch 'master' into Issue2733
Merge branch 'master' into Issue2733
Fixed indentation in js files
Merge branch 'master' into Issue2733
[2733] 'Distribute points' questions: have an option to force 'distribute unevenly'