Rails test coverage

* Check the `coverage` directory after running `rake spec`
Course Enrollments on the Dashboard
Added Dashboard to Navigation
Enrollments URL, Unused Code
Merge branch 'master' of github.com:Eduki/eduki into dashboard
Collections URL uses currentUser
Collections URL uses currentUser..2
Removed a changes that shouln't be there
Enrollment URL
Merge branch 'master' of github.com:Eduki/eduki
Merge branch 'dashboard'