Reorder occupantlist in groupchat to match roster. Fixes #2102

context 'send
custom status' menu entry.

See [8255] and fix #3226.

[sgala] check autoaway state only every 10 seconds, so that gajim allows for processors to sleep longer for power saving (see linuxpowertop.org)

prevent a TB when a jid is in mem but not in DB (is has been removed while gajim was running) fixes #3073