allow shutdown func now get the method we used to close the tab. So that we check if a row is selected in gc control only if we close tab by pressing Esc key. fixes #2528

from common.exceptions import GajimGeneralException as GajimGeneralException -> from common.exceptions import GajimGeneralException

reconnect infinitly when autoreconnect option is True. fixes #2411

do not ask confirmation window nor check if a row is selected when we close muc with /leave (or others) command. fixes #2528

PrivateChatControl now hold room name so that we can draw banner of pm even if room control has been closed. Fixes #2527

fix adjust_priority_with_status option: save when we change this option and correctly get autopriority_* values