Extensive cleanup and fixes, adds ranking

Repo
- Removed some unused docs
- Removed junk from readme
- Removed more junk from requirements
Backend
- Moved util to utils folder
- Added ranking system based on impulse algorithim, partially complete
ATM
- Removed unused model methods and added docs to various methods
- Removed BanLog's
- Added hostname to servers, specifies the public IP/domain
- Cleaned up code in start queue
- Changed the way friend invite method works
- Added ranking considirations to worker
Frontend
- Removed friends count subtext thing