Adding validation type tests for AttributeValueFormType, adding string validation option as default in LiteralAttribute
Adding EntityAttributeValue test in AttributeValueFormType tests
Adding test for ChoiceAttributeValue in AttributeValueFormType test
Fixing method name for data provider
Fixing method name for data provider
Cleaning up the choice attribute test in AttributeFormTypeTest
Updating API for Project entity
Adding some project data on ProjectFormTypeTest