Fixed mapping issue if MediaBundle is not installed
Category parent must not be a mandatory field
Merge pull request #62 from eaxfr/master

Fixed mapping issue if MediaBundle is not installed
Fixed mapping issue if MediaBundle is not installed
Revert "Fixed mapping issue if MediaBundle is not installed"

This reverts commit b941f61ad6f27f8b884e900a543f75ab2a684bdd.
Merge pull request #64 from eaxfr/master

Revert "Fixed mapping issue if MediaBundle is not installed"
Merge pull request #63 from eaxfr/2.2

Fixed mapping issue if MediaBundle is not installed
Merge remote-tracking branch 'sonata-project/master'