move listeners to core
comments++
Merge pull request #170 from usergrid/Usergrid-155/Entity-Delete-Listener

Usergrid 155/entity delete listener
Merge branch 'two-dot-o' of https://github.com/usergrid/usergrid into USERGRID-140_partial_updates

# By Shawn Feldman
# Via Shawn Feldman (1) and Todd Nine (1)
* 'two-dot-o' of https://github.com/usergrid/usergrid:
  comments++
  move listeners to core

Conflicts:
	stack/corepersistence/collection/src/main/java/org/apache/usergrid/persistence/collection/guice/CollectionModule.java