window: Don't show resize-grip with window decorations
window: Don't show resize-grip with window decorations

If window-manager decorations are enabled (by disabling the
toolbar, currently), don't show the resize-grip.

clutter-project/mx,jonnylamb/mx,clutter-project/mx,jonnylamb/mx,pwithnall/mx,pwithnall/mx,pwithnall/mx,clutter-project/mx,jonnylamb/mx,pwithnall/mx,jonnylamb/mx,clutter-project/mx