Remove unused images and assign orphaned images
Fixes images loading from fixtures and set the picture as a grid attribute
Fixes Unit tests
CS Fixes
Add bug fix and BC notes
PIM-2521: Avoid to load all attributes in grid column configuration [Performance issue]
Merge pull request #1068 from akeneo/PIM-2521

PIM-2521: Avoid to load all attributes in grid column configuration
Merge pull request #1066 from akeneo/fix/fixtures_images

Fixes images loading via fixtures
Merge branch 'master' into PIM-2448