Client synchronization improvements

[yungcomputerchair]

Makes a few changes to packet ordering during player loading to increase reliability in the client.

• Moves a few things from PC_ENTER handler to LOADING_COMPLETE handler, fired only once. This way we don't risk packets getting missed.
  • MOTD
  • Auto-fail missions
  • Buddy list sync (fixes bug where buddy list sometimes doesn't populate on login)
• For Academy only, fix a packet ordering issue causing players with high latency to not see their equipped nanos in the nanocom (fixes #262)

[CakeLancelot]

I will merge this after testing on the public server for a day or two