shell: Default to maximize/fullscreen on current output
shell: Default to maximize/fullscreen on current output

mchalupa/weston,mchalupa/weston,sir-murray/weston,Tarnyko/weston-xdg_surface_present,Gnurou/weston,xorgy/weston,Fantu/compositor-spice,giucam/weston,Tarnyko/weston-xdg_surface_present,kwm81/weston,giucam/weston,jonnylamb/weston,Fantu/compositor-spice,krezovic/weston,xorgy/weston,Gnurou/weston,jonnylamb/weston,eyolfson/weston,eyolfson/weston,sir-murray/weston,Fantu/compositor-spice,krezovic/weston,udoprog/weston,kwm81/weston,udoprog/weston