Merge pull request #16 from pvuorela/master

[systemsettings] Allow quotations and escaping on version string.
[systemsettings] Add support for lockcode clearing
Merge pull request #17 from rainisto/master

[systemsettings] Add support for lockcode clearing
[systemsettings] Add USB tethering support

Bump version also.

Signed-off-by: Philippe De Swert <philippe.deswert@jollamobile.com>
[systemsettings] Add an orientation lock setting
Merge pull request #19 from Vesuri/master

[systemsettings] Add an orientation lock setting
Merge pull request #18 from philippedeswert/master

[systemsettings] Add USB tethering support
[systemsettings] Expose display double tap wakeup state