e17/comp: make config dialog inaccessible while editing window matches
e17/comp: make config dialog inaccessible while editing window matches

overlay dialog with a background and put the match widgets above so that 
one cant press other buttons e.g. delete the match that one is currently 
editing. also fixes the problem that when frametable has a translucent
background the dialog below doesnt shine through


SVN revision: 57337

tizenorg/platform.upstream.enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,tasn/enlightenment,tasn/enlightenment,FlorentRevest/Enlightenment,tizenorg/platform.upstream.enlightenment,rvandegrift/e,FlorentRevest/Enlightenment,rvandegrift/e,tasn/enlightenment