Prepare Behat fixtures for new scenarios
Create some scenarios filtering text fields on empty operator
Add scenario with textarea
Change typo in definition of scenario
Merge branch 'master' into empty_operator_behat

Conflicts:
	features/Context/Page/Base/Grid.php
Refactor filtering by empty on behat scenarios
Add scenarios for number fields
Update scenarios
Remove useless spaces
Add date filter
Allow to create date fields
Allow to filter per dates
Add scenarios for date filtering
Allow to create metric values
Add filters for products
Allow to filter by empty price
Rename features and remove useless scenarios
Merge branch 'master' into empty_operator_behat
Merge pull request #1046 from akeneo/empty_operator_behat

Empty operator behat