WIP fix referrers cascade persist
Merge remote-tracking branch 'origin/master' into split-referrer
tweaking phpunit settings - speedup tests by 10 percent
introduce MixedReferrers and Referrers
WIP adding referrerDocument and renaming to referencedBy - the tests still horribly fail
WIP
Merge branch 'master' into split-referrer

Conflicts:
	lib/Doctrine/ODM/PHPCR/DocumentManager.php
	lib/Doctrine/ODM/PHPCR/UnitOfWork.php
cleanup handling, cascade everything along with the references
use strategy of referring field, cleanup some doc
some more small cleanups
fix another typo, cleanup tests
ws tweaks
fix test
code tweak
Merge remote-tracking branch 'origin/master' into split-referrer

* origin/master:
  removed scheduledAssociationUpdates

Conflicts:
	lib/Doctrine/ODM/PHPCR/UnitOfWork.php
Merge pull request #252 from doctrine/split-referrer

[WIP] Split Referrers into MixedReferrers and Referrers with cascading