[CrowdIn] Updated translations
Merge pull request #1633 from nono-akeneo/crowdin/1.2-2014-10-06-04-00

Update translations from CrowdIn
PIM-2345 : clear the object manager during CSV export to avoid memory
leak
Merge pull request #1634 from akeneo/PIM-3245

PIM-2345 : clear the object manager during CSV export to avoid memory
PIM-3247: Can't display all variant groups on grid

* Improved behats
* updated CHANGELOG
* Fix bug on grid, variant groups were not correctly displayed. (max
result was applied to the joins and not directly on the variant group)
Merge pull request #1641 from akeneo/PIM-3247

PIM-3247: Can't display all variant groups on grid
PIM-3244 : fix memory leak on products with media export
PIM-3244 : re-work memory leak fix to ensure backward compatibility
Merge pull request #1640 from akeneo/fix/PIM-3244

Fixed PIM-3244 memory leak on products with media export
PIM-3228 : prepare tag 1.2.8
PIM-3228 : update version to 1.2.x