Merge pull request #58 from webOS-ports/morphis/work

CompositorWindow: add property for the process id
Merge pull request #59 from webOS-ports/morphis/work

Check for webapp-launcher instead of WebAppMgr
Expect a string as service result rather than an object

Signed-off-by: Simon Busch <morphis@gravedo.de>
ScreenShooter: when no output path is provided generate one

Signed-off-by: Simon Busch <morphis@gravedo.de>