Handling attendance permission and course persistence. Added unit tests. Added dummy data in Main UI
Added files for style on login screen.
Created dark login form to resemble class rewind. Added images for login screen
Updated login and style to include error message. Added error message handling on back end.
Updated check for error message. Removed model from login.
Updated format of css. Added space between footer and body.
Merge pull request #31 from drem-darios/login-screen

Login screen