Rework and feature parity to existing site

Rework and feature parity to existing site
 - Reworked the routing system to use a more dynamic approach
 - Moved most of the duplicate code into distinct functions
 - Add login functionality and continual checks if a user is logged in
 - Add register functionality as well as activation
 - Add course creation and proper authorization handling server side
 - Add lecture creation and proper authorization handling server side
 - Add note creation and proper authorization handling server side
 - Add resetpassword functionality
 - Add jquery 1.7 minified file
 - Various tweaks and improvements