PIM-3048: Throws and exception if fixture directory does not exist
PIM-3048: Update CHANGELOG.md
PIM-3048: Change exception thrown
PIM-3048: Remove useless use statement
Merge pull request #1343 from akeneo/PIM-3048

PIM-3048: Throws exception on installation if data set is unknown
Use dev-master branch after dev-develop removing
Merge branch 'master' into fix/update-wsse-authentication