Add rspec tests for Group model
Merge branch 'master' of git://github.com/MarkUsProject/Markus
Merge branch 'master' of git://github.com/MarkUsProject/Markus
Merge branch 'master' into issue-1726
Shorten some lines that were too long
Merge branch 'master' into group_rspec
Shorten line that was too long
Fix unused variable
Remove group_test.rb
Improved upload button script and implemented it in two more views.
Merge branch 'master' of git://github.com/MarkUsProject/Markus
Merge branch 'master' into issue-1726
Fixed javascript spacing.
Migrate two tests from group_test.rb to grouping_spec.rb
Merge branch 'master' into group_rspec
Add space before } as requested by houndci
Merge pull request #1800 from ifung/group_rspec

Add rspec tests for Group model
Added rspec tests for Assignment model's attributes and associations. Cleaned up model.
Merge branch 'master' of git://github.com/MarkUsProject/Markus
Fixed houndci complaints