While connecting to a Wifi network g-c-c would hide the button that
launches the connection preferences dialog. This is inconvenient
when network manager keeps on attempting to reconnect to a
misconfigured network.
These changes rework the logic of the buttons by always presenting
the configuration button and toggling the visibility of the spinner
accordingly.
Fixes#493
Set to non-translatable as it is just a placeholder.
This change has been requested by Benjamin Berg(@bberg).
Issue has not been created for this but it was stated in issue#397
