Convert our Address entity into a superclass and introduce a DefaultAddress entity
so that we can extend and customize our address tables for custom uses.
Merge branch 'master' of git://github.com/Sylius/SyliusAddressingBundle into Superclass

Conflicts:
	Resources/config/doctrine/Address.orm.xml
	Resources/config/driver/doctrine/orm.xml
Merge pull request #26 from mykehsd/Superclass

Convert our Address entity into a superclass and introduce a DefaultAddr...