Added entities config, migrations and connection to localDB.

Haven't tested any queries yet except the test in the Console test program used to auto-create the database. Entities config has always been shaky with the relationships but this seems okay so far. Will test more soon.
Moved the Items relationship to the shop to the Shop entity since it is the principal.
Modified the config file to include a connection string to point to the localDB instead of relying on the default convention. Ported the connectionstring to the console test project because it must be included.
Added utility methods in the Framework project and a DbContext to ObjectContext transformation method.
Working base of the entities project with a self-test in the ConsoleTest.
Documentation of the Entities and Framework project.