re #fix_8 delete the generic model file
re #fix_8 update the SellerUser model with the new foreign key
constraint with Profile model
re #fix_8 update the database initialization script with the profiles
creation : administrator, manager, publisher
re #fix_8 add the Profile model
re #fix_8 delete Index in sqlalchemy call
Merge pull request #13 from jean553/fix_8

Fix 8 - Add one model for Profile