Setup for rating algo dev
Class Rating
Update Domain
Classes du domaine
 Modification de User,
 Ajout de produit,preference,
liaison de la classe preference à user et product
Default value for elo

1500!
First version of the rating algorithm
Removed getters
Modification de User, ajout des contraintes, Modification du bootstrap, ajout de produits et de types de produits
update
Integration solving
Creation of test
Integration
Merge branch 'AlgoRating' into Integration

Conflicts:
	test/unit/nuitinfo2013/ProductTests.groovy
Merge branch 'master' into Integration

Conflicts:
	grails-app/domain/nuitinfo2013/Product.groovy
Merge branch 'AlgoRating' into Integration
Intégration de la branche AlgoRating