Merge pull request #27 from locusf/master

Many new things
Merge pull request #28 from locusf/master

More changes as per the reports of qwazix
[statusbar] Introduce Layouts module to dynamically contain the statusbar items.
[notifications] Notifications view now flickable vertically and items are dynamically sized.
[system] Shutdown screen.
[env] Set environment variables inside the process to achieve launchable applications.
[deps] Fix dependency to qofono.
[version] Version bump.