PIM-3371 : add extra attributes and fix product data set
PIM-3371 : re-work products demo set to add attributes
PIM-3371 : update icecat_demo_dev fixtures
PIM-3371 : all attributes are useable as filters in data set
PIM-3371 : fix attribute options
Merge pull request #1865 from akeneo/PIM-3371-update-installer

PIM-3371 update installer