PIM-1827: Fix CSS to align the area for file upload
PIM-1827: Align the area to drop the file to import
Merge pull request #642 from akeneo/PIM-1827

PIM-1827: Align the area 'drop a file or click here'
update translations
Merge pull request #644 from akeneo/crowdin/update-2014-01-07-16-15

PIM-1831: update translations
Update CHANGELOG.md
Merge branch 'master' into oro/grid