when we press a "normal" key and message_buffer doesn't have the focus, we give it the focus, and we send it the event

agents are now in Agents group, even if the server tells us it's in another group

I tried to make gajim more HCI friendly. ERRORS use Error dialog and not warning dialog. Need core implementation too. Also other fixes. plz see a comment for you yann (sre)

remove some ugly hack for autoconnection

use spawn for fork/execve