Add a new field for assignment id
Add admin folder in controllers.
Add stuff that got overwritten back
Add admin assignment views.
resolve merge conflict.
Add stuff that was missing
Merge branch 'master' of https://github.com/aries0420/codeable
Modify assignments index.
Modify assignments index again.
Add admin index and subscriber index.
Add additional assignment_id field to assignment
Merge branch 'master' into ali
Add category to assignment index.
Merge pull request #7 from aries0420/ali

Add category to assignment index.
Add footer to layouts
Resolve conflicts with Phil
Update styles, home, icons, table