Added API for gallery & media
Removed access control check & added documentation
Added getMediaFormats API method
Added binaries data retrieval method for media
Added serializer config for Media entities
Update the documents managers
Set controllers as services and added unit tests
Updated format API method
Merge pull request #482 from Bladrak/api

Added API for gallery & media
Merge pull request #483 from sylvaindeloux/serializer

Added serializer config for Media entities
Adding unit test with dev dependences
Merge pull request #481 from eko/master

Add a block translation example for sonata_template_box twig node tag
Fix serialization
fix composer.json
Update travis for mongodb package
Sets group tests and skip when lib not available
Merge pull request #484 from pokap/document_update

Update the documents managers
Added api media list
Merge pull request #485 from Bladrak/addedApiMediaList

Added api media list
Refactor Manager (https://github.com/sonata-project/SonataCoreBundle/commit/2391040a4d0f47cce1be2add4eb8089ad346f8ac)