Described the export media with products feature
Directly inject the Filesystem into the Media manager
Fix phpcs
Trully ignore the media in the product normalizer
Create the export directory if necessary
PIM-1008 Created a product csv serializer processor

Allows to serialize product and store media to export
PIM-1008 Normalize product media in the flat product normalizer
PIM-1008 Added a copy method to the media manager
PIM-1008 Created a product file writer

It writes products file and copy their media
PIM-1008 Created a product method to get its media
PIM-1008 Configure the product export job with the new processor/writer
PIM-1008 Check that media are correctly exported
Removed useless use statement
PIM-1008 Added one more product to the export media scenario
Merge branch 'master' into feature/export_media

Conflicts:
	src/Pim/Bundle/CatalogBundle/Manager/MediaManager.php
Stored generated media images out of web directory
Display generated images through a controller
Fixed ProductFileWriter tests
Fixed code standards
Added title to export media scenario