`Container.addHandler` will now use the new `addToDisplayList` and `removeFromDisplayList` Game Object methods.
`Container.addHandler` will now use the new `addToDisplayList` and `removeFromDisplayList` Game Object methods.

spayton/phaser,photonstorm/phaser,spayton/phaser,BeanSeed/phaser,photonstorm/phaser,BeanSeed/phaser