FIX for issue 1035, added an option to hide/view totals in grade entry forms, made changes to relevant views and implemented a javascript function, also, removed the results column in the grades forms list within the student view
added support for internatiolization for hide/show total columns feature
Added api/assignments/:id/groups
Cleanup main api controller comments
Merge pull request #1055 from oussamaBA/issue-1035

Option to hide Total field in spreadsheet
Closes #1035, made changes to grade entry forms
Update SubmissionDownloadsController
Created tests for controller, and also fixed a bug in
submission.rb's get_submission_by_group_and_assignment
MainApiController should render 404's for all routes by default
Simplify GroupsController
Merge pull request #1062 from danielstjules/issue-1002

Issue 1002: Add groups controller, update submission_downloads
FIX for issue 1029, add indicator for new annotations from remarking
Merge pull request #1063 from m-wu/issue-1029

Add indicator for new annotations from remarking.
Closes #1029