Add Always On Top window settings
Fix fullscreen windowing with Compiz/Unity

Prevent the top menu and sidebar from being visible in Ubuntu when set in full screen
Fix transitionis from full screen to windowed screen

Transitions from bordered windows to full screen borderless aren't working 100%, the compiz sidebar stays visible.
hide private functions when they're unused
MythGame: pass const QStrings by reference (cppcheck)
LibMythTV: pass const QStrings by reference (cppcheck)
MythTV-Setup: pass const QStrings by reference (cppcheck)
MythFrontend: pass const QStrings by reference (cppcheck)
Fixes wrong mapping of picture controls on OSD"

patch by <warpme@o2.pl>

Fixes #11983 and #11885
Merge remote-tracking branch 'upstream/master'