Update ProductAssociation entity to allow associations to groups
Update form and datagrid according to changes in the ProductAssociation entity
Add groups to the product association form type
Rename datagrid manager to reflect the purpose more accurately
Initial group association grid implementation
Fix filtering by group type
Merge branch 'master' into PIM-1265
Remove axis from AssociationGroup datagrid
Implement switching product/group association views in the product association tab
Merge branch 'master' into PIM-1265
Merge branch 'master' into PIM-1265
Add a scenario for creating product associations
Remove unnecessary steps
Merge pull request #402 from akeneo/PIM-1265

Allow associating products to groups