create caps_cache if it doesn't exists (can happen if logs.db is created in 0.11.2 version). fixes #3512

don't open chat window when single click is enabled and we click on a metacontact icon, but expand it. fixes #2072

when we get a 40* error from server about private storage, it doesn't mean server doesn't support it.

[shivan] show nothing in status combobox when status is not unified for all globaly sync'ed accounts. see #3489

change global status when we set it through systray menu, even if one account already has this status. see #3489