null terminate group messages (cause jfreegman can't str8 c)
Added name packet to group chats, send one when appropriate.
Merge branch 'master' of https://github.com/dubslow/toxcore
Kill group connection to friend once we are connected to group.
Fixed group bugs.

Connections should now die when appropriate instead of lingering
endlessly.
Added names to peer response packet.
Removed useless variables.