Change internal event registration to me.on
Change internal event registration to me.on

This makes the use of listeners via config from outside possible.

MorrisJobke/extjs-ux,uvillazon/extjs-demo,MorrisJobke/extjs-ux,harrydeluxe/extjs-ux,uvillazon/extjs-demo,harrydeluxe/extjs-ux,MorrisJobke/extjs-ux,uvillazon/extjs-demo,harrydeluxe/extjs-ux