[connman-qt] Use async DBus calls when possible.

Help minimise blocking of UI when doing IPC.
[connman-qt] fix example build for changed API
Merge pull request #109 from lpotter/master

[connman-qt] fix example build for changed API
Merge pull request #110 from amccarthy/master

[connman-qt] Fix signal emission on property changes.
bump version to 1.0.56
Merge pull request #101 from amccarthy/async

[connman-qt] Use async DBus calls when possible.
[connman-qt] hook defaultRoute with service connected change.

Conflicts:

	libconnman-qt/networkmanager.cpp
	libconnman-qt/networkmanager.h
[connman-qt] make new service signal (propertiesReady) and use in
manager to signal servicesChanged
Merge pull request #111 from lpotter/master

[connman-qt] hook defaultRoute with service connected change.
bump version to 1.0.57
[connman-qt] Fix missing items in saved services model.

Make use of the provided properties passed to the NetworkService
constructor without initiating an addition properties request or
emitting property changed signals.