Merge pull request #34 from sandramo/master

CRAFTERCMS-368 - Harvester Refactoring
CRAFTERCMS-368: Harvester daemon. Including improvements
Merge branch 'master' of https://github.com/craftercms/social

Conflicts:
	server/src/main/java/org/craftercms/social/notification/harvester/BaseHarvesterService.java
	server/src/main/java/org/craftercms/social/notification/harvester/impl/UGCAuditHarvesterServiceImpl.java