Expanded network protocol, read more

Not really doing much, just busywork with the server's handlers.

I've tweaked the TODO tags as well.

common/network/serial_packet.hpp

@@ -34,7 +34,7 @@
 typedef SerialPacketBase SerialPacket;
 
 //DOCS: NETWORK_VERSION is used to discern compatible servers and clients
-constexpr int NETWORK_VERSION = 20150205;
+constexpr int NETWORK_VERSION = 20150213;
 
 union MaxPacket {
 	CharacterPacket a;