PIM-2602 : add abstract media
PIM-1602 : add abstract metric
PIM-2602 : add abstract product price
PIM-2602 : use abstract models in product value to allow the override
Merge branch 'master' into PIM-2602_abstract_models
PIM-2602 : add abstract association
Merge branch 'master' into PIM-2602_abstract_models
Merge branch 'master' into PIM-2602_abstract_models
PIM-2602 : use AbstractAssociation as method argument to replace the use
of Association
Merge branch 'master' into PIM-2602_abstract_models
PIM-2602 : update MongoDB normalizers to be able to deal with abstract
classes
Merge branch 'master' into PIM-2602_abstract_models
Merge branch 'master' into PIM-2602_abstract_models
PIM-2602 : fix CS
PIM-2602 : update changelog
PIM-2602 : fix CS
PIM-2602 : fix phpdoc
PIM-2602 : fix phpdoc
PIM-2602 : fix phpdoc
PIM-2602 : fix phpdoc