Renamed server_connections.cpp => network_handlers.cpp
Began modulating ServerApplication, beginning with the accounts
Refactored the character management into a separate class
Merged server_internals.cpp and network_handlers.cpp into
server_application.cpp
Rearranged the methods
Added empty managers for CombatData, RoomData and EnemyData

These are just placeholders for now, but I'll flesh them out later.

I should note that the server's managers all build cleanly.
Server is nearly done, only server_application.cpp is failing
Partial rewrite of server_application.cpp

I've also fixed some other issues along the way. However, the next step
requires support for multiple rooms. Finally.
The server is building, but still needs work

There is some missing character creation/unloading code, and there are a
few other issues highlighted by TODO tags, see below.

In general, 'mapIndex' has been renamed to 'roomIndex'. Multiple rooms
have not been fully implemented yet, but I'm working on it.

Other issues:

* FileFormat needs to be changed to MapLoader
* Server's character movement is still slaved to the clients

The client does not build.
Created MAX_PACKET_SIZE
Fleshed out and rewrote some code

Fleshed out HandleCharacterNew() and HandleCharacterDelete(), and rewrote
HandleSynchronize().
Merge branch 'new-server' (early part) into develop

Merging the server's refactored aspects into develop so that I can work on the map systems separately. See the logs for changes, because I'm too busy to add them here.