Merge pull request #107 from dantleech/load_fixtures_fix

Fixed LoadFixtureCommand
readd registration of system node types in the repository:init command
change class for all types
Merge pull request #109 from ivan1986/patch-1

change class for all types
use getContainer and not simply access member variable
[POC] ODM Initializer Support
Made PhpcrInitializer use ManagerRegistry exclusively