[connman-qt] Ensure errors are always reported when connecting.

Error notifications are not sent on subsequent connection attempts if
the service is in the failure state. Clear the Error property if the
service is in the failure state prior to attempting to connect.
Merge pull request #47 from amccarthy/clear-error

[connman-qt] Ensure errors are always reported when connecting.
Merge pull request #45 from lpotter/master

[connman-qt] make getProperties and setOfflineMode async
[connman-qt] bump version to 1.0.14
[connman-qt] bump version to 1.0.11

not 1.0.14
Revert "[connman-qt] make getProperties and setOfflineMode async"

This reverts commit cc2ad85df46560eee7e4b5b5b448f4ad41264159.

Properties for qml need to be available immediately. The only way
to do this is waitForFinished.