webapp-launcher: submission 22

* allow to run webosports calendar app as headless one

Signed-off-by: Simon Busch <morphis@gravedo.de>
luna-next-cardshell: submission 13

* improved swipe gesture for card view
* improved power menu with option to restart UI only

Signed-off-by: Simon Busch <morphis@gravedo.de>
org.webosports.app.calendar: install db8 configuration

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