Also inform groups and qtile of mouse-enter focus changes
Also inform groups and qtile of mouse-enter focus changes

Cursor motion when focus_follow_mouse is true only focusses in the core
but doesn't focus groups, so border colors do not change and
occasionally other side effects appear (e.g.  qtile.current_window is
not changed). This fixes that.

ramnes/qtile,ramnes/qtile,qtile/qtile,qtile/qtile