* Run 'CHostState::Think()' in the main thread.
* Construct 'NetGameServer_t' objects in main thread before dispatching (TODO: browser).
* Dispatch the call to 'CBanSystem::AddConnectionRefuse' from 'SV_IsClientBanned' to the main thread if we aren't main.
* Return bool for CBanSystem::AddEntry and CBanSystem::DeleteEntry for future optimizations (next commit).
* Use c++ methods as much as possible.
* Use enum types for accessing NavMesh objects from array.
* Use size_t for for loops when testing against size types.
* Don't compute strlen twice of more on the same string.
* Don't use unnecessary c string casts if there is a method with a std::string overload.
* Don't create string objects from string pointers if we could use them directly.
* Don't initialize RCON password twice on each change, and don't set if the new password equals the old.
