Fast MongoDB writer
Enable the MongoDB direct writer only in Mongo env
Fixes old names not refactored
Merge branch 'master' into direct_mongodb_writer

Conflicts:
	src/Pim/Bundle/BaseConnectorBundle/Resources/config/storage_driver/doctrine/mongodb-odm.yml
Perf optimization on unique value check
This optim provides a x4 perf improvement on a 100.000 lines import
Fixed numeric validation
Corrected bug with unique validation
Merge branch 'master' into fix/PIM-2781
PIM-2781: Clean code
Merge branch 'master' into fix/PIM-2781
Switch to product to array conversion and add update
Move Version entity mapping to a separate mapping file
Merge branch 'master' into fix/PIM-2781
Always update the "updated" date
TimestampableListener fix. Product.updated didn't get updated when only ProductVariant were updated - particularly on import from csv.
ProductValueInterface is used for checking instead of AbstractProductValue
Better management of multiple options
Fix date problem
Add normalization of association
Move Version to Model namespace