Use gaufrette to get media mime type
Merge pull request #1185 from akeneo/improvement/media-mime-type

Use gaufrette to get media mime type
PIM-2795: Add phpdoc on job factory
PIM-2798: Add some methods for behat scenarios
PIM-2799: Clean method name
Merge pull request #1192 from akeneo/PIM-2798

PIM-2798: Add behat usefull methods
Freeze deps batch, measure, gaufrette
Update platform ref
Revert platform updating
PIM-2716 : allow to define many roles and groups when load new users
PIM-2716 : add a datafixture for groups
PIM-217 : add a roles installer
PIM-2716 : update roles and groups loaders
PIM-2716 : update minimal set and roles fixtures loader to setup ACLs
PIM-2716 : Load our own users, groups and roles instead of Oro's
PIM-2716 : fix user groups
PIM-2716 : update other installer fixtures