Added ability to delete cohort
Added cohort column to teachers
moved teacher dashboard location to /teachers/dashboard
Merge pull request #14 from Lycanstrife/master

Fixes for layout after mega-merge
Teacher can set their default cohort
Switched storing cohort from name to id
Refactored Code
Merge pull request #15 from Lycanstrife/master

Readability changes and code viewing window
Teacher can approve student
Authenticates Teacher before updating, displaying students and approving students
Adding 'Sign Out' link to students page
Merge pull request #16 from Charliebr73/master

Adding 'Sign Out' link to students page
Allows teacher to view approved students
Student can be unnapproved
Some housekeeping if no students require attention
Merge pull request #18 from Lycanstrife/master

More front-end, added splash page
Merge branch 'master' into teacher
Fixed broken tests after link changes on front-end
Teacher can delete student
Fixed empty cell bug