Allow empty emails for devise and github auth
Merge pull request #38 from rails-decal/omniauth-bug-fix

Allow empty emails for devise and github auth
Add param to user routes
Fix #36. Use nickname to find user
Fix method for checking if the user submitted an app
Merge pull request #39 from rails-decal/mark/fix-friendly-user-nickname

Fix friendly user nicknames
Student application has a semester
Fix student_applications that have semesters
Merge pull request #41 from rails-decal/mark/fix-student-application

Fix method for checking if the user submitted an app
Add evaluate functionality for applications