GF-35208: fix dispatch system so delgated events are only dispatched to the immediate owners

* make meaning of "delegate" property on event the destination object, not the source
* Remove unused code from the old delegation system.
* Include test case from this bug report in ComponentDispatchTest.js

Enyo-DCO-1.1-Signed-Off-By: Ben Combee (ben.combee@lge.com)