Sync netcode, interpolation, loads of bugs fixed

ADDED mouse positions client to server
ADDED gotoFail
ADDED comp variables sync redirections
ADDED level Upgrade function
UPDATED Text class with Castle one
FIXED bullet creation through ENH sync not RPC
FIXED PEP8
FIXED sentWorldStateTo behaviour
FIXED from client-side bullet-rate to server
FIXED camera bug with wrong player focused
FIXED bug with level reset on new round
FIXED interpolation system
FIXED network player flipping
REMOVED id references with entity from "RPC"
REMOVED dead code
REMOVED standalone define
REMOVED weird CMyPlayer use client-side