Finished Password-Reset Function

Added Admin-Models

Added Main-App with NEWS Function

Added possibility to choose Food from a List of Products

Added Blocks for custom CSS and Javascript
Minor changes in chat_js

- Missing: real password reset

[Web]
- Django 1.8.5 with all-auth Plugin
- Bootstrapped Webseite
- Login with LDAP
- Change Email and Password

[Bugs]
- Password-Change only local, not in LDAP