Doors + Packet Handlers

Doors are handled now. A little glitchy in that you can move immediately
after opening. Still have to find a good way to limit player input.

Also updated some other packet handlers for consistency.
Fixed Warp_Take

The client properly gets/loads map files it doesn't already have from
the server upon warping.
StatusLabel/door stuff

Fixed status label to actually work (it was constantly being cleared
when update was called) and made it so changing maps resets the door
state.
Map Items/Avatar

Map Items add/delete (for other players) is working, as well as avatar
changes (again, for other players).