Minor tweaks
UDPNetworkUtility is a singleton, disabled InCombat scene

I found incombat to be way too finicky to keep up to date, so I disabled
it for now.
Added the escape hotkey, refined BoundingBox a bit

LobbyMenu also searches for a server as soon as you enter, so you don't
have to press an extra button, a good feature.
Merge branch 'develop'