Change sdk connection from shared to unqiue ptr
to make sure to only have one connection alive at
every time. This fixes to removal of wallpaper because
of a bug a shared connection as set in the monitorlistmodel.
The SDK connection is now part of the ScreenPlayWallpaper/Widget.
I cannt reproduce this in an empty project but _something_
stopped the quit call in the terminate function. The only
workaround I found was using an async loader...
Increase ping alive to 3000ms and change it to a static variable
Move getAvailableFillModes to globalvariables.h
