PIM-3326-stable : Fix mongo db filter with multiple filters and add behat for that kind of problem.
PIM-3326-stable : Adapt behat for stable branch
Merge pull request #1828 from akeneo/PIM-3326-stable

Pim 3326 stable: Fix mongo filters with multiples values and empty
PIM-3426: Fix edit common attributes
Merge pull request #1820 from akeneo/PIM-3426

PIM-3426: Fix edit common attributes
PIM-3434: throw exception when media file does not exist