Merge pull request #982 from akeneo/fix/attribute_option

Added constraint on attributeOption
Replace Process with simple exec

Conflicts:
	src/Pim/Bundle/ImportExportBundle/Controller/JobProfileController.php
Fix on metric validator
Merge pull request #1040 from akeneo/fix/metric_validator

Fix on metric validator
Corrected bug whene importing options with bad atttributes
Merge branch '1.0' into 1.1
Merge branch '1.1'

Conflicts:
	src/Pim/Bundle/ImportExportBundle/Controller/JobProfileController.php