PIM-3276 UI improvements for grid column configuration
PIM-3270 Add a reset button
PIM-3276 Update translation keys
Merge pull request #1701 from akeneo/PIM-3276

PIM-3276 UI improvements for grid column configuration
PIM-3210 Add ACL on entity history
Merge pull request #1705 from akeneo/PIM-3210

PIM-3210 Add ACL on entity history
PIM-3209: Fix import running even with wrong file

*Added verification of the file extention before the launch of the job
*Added new behats in order to verify that the file extention is allowed or not