mc-tool: always show *some* value for ConnectAutomatically
mc-tool: always show *some* value for ConnectAutomatically

Previously, if an account had ConnectAutomatically: True, then mc-tool
show would say:

    Connects: automatically

But if the property was False, mc-tool show would not mention it. This
patch makes the command produce:

    Connects: only when requested

in the latter case.

freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control,freedesktop-unofficial-mirror/telepathy__telepathy-mission-control