PIM-1568 Avoid Doctrine to read model mapping files
Remove obsolete files
Merge branch 'master' into task/PIM-1568

Conflicts:
	src/Pim/Bundle/CatalogBundle/Builder/ProductBuilder.php
	src/Pim/Bundle/CatalogBundle/Resources/config/doctrine/Media.orm.yml
	src/Pim/Bundle/CatalogBundle/Resources/config/doctrine/ProductPrice.orm.yml
	src/Pim/Bundle/CatalogBundle/Resources/config/model/doctrine/Product.orm.yml
PIM-1584 Add dependency on MongoDB
PIM-1584 Enabling MongoDB ODM driver
PIM-1584 MongoDB ODM parameters
PIM-1584 Rollback from entity moving
PIM-1584 Skeleton of MongoDB driver configuration
PIM-1584 Enable MongoDB bundle
Moved ODM candidates object to Model namespace
PIM-1584 Move Product namespace
PIM-1584 Moving Category namespace
Reverse Category from Model to Entity, too much work to do for now to make it works on MongoDB
PIM-1584 Fixe last Model/Category remains
PIM-1584 Fixes Media and Category namespace
PIM-1584 Update refs to Demo
Switch short entity name to full namespace with Model for Product
Fix Entity short name to be compatible with Model
PIM-1584 Fixes Entity shortname for Group
PIM-1584 Fixes Group entity shortname