PIM-2836 Prevent hidden fields to be submitted
PIM-2836 Fixed disabling of hidden fields
PIM-2836 Rely only on displayed values in the mass edit common attributes
PIM-2836 Fixed common attributes collection keys
PIM-2836 Fixed specs
PIM-2836 Fixed edition of common attributes
Merge pull request #1221 from akeneo/pim-2836

PIM-2836 Prevent hidden fields to be submitted