critical fix for DataRepeater to remove the event listeners from the correct collection

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
minor tweaks and formatting cleanup for debugging

Enyo-DCO-1.1-Signed-off-by: Cole Davis <cole.davis@lge.com>
Merge pull request #491 from enyojs/repeater-critical-fix

Repeater critical fix

Reviewed-By: Ben Combee (ben.combee@lge.com)