ODM support for initializers

- Manager passes ManagerRegistry instead of PHPCR\SessionInterface to
  init() method.
- Managers are now assigned names.
add query builder loader
cleanup documenttype querybuilder
fix the name of the event manager service
moved DocumentMigrateClassCommand to PHPCR ODM
fix cs
Add support for burgov/key-value-form-bundle to form type guesser for assoc properties. fix #111
Merge branch 'phiamo-master'

Conflicts:
	Tests/DependencyInjection/DoctrinePHPCRExtensionTest.php