Add UT : Rename AttributeTypeTest by AttributeTypeTestCase and refactor it
Add UT for attribute types
Merge branch 'master' into add_ut

Conflicts:
	src/Pim/Bundle/CatalogBundle/Tests/Unit/AttributeType/PriceCollectionTypeTest.php
Merge pull request #314 from akeneo/add_ut

Add some UT on attribute types