Movie database handler: Interface and Test cases done

Files to be reviewed:

Interface:
https://github.com/TaviscaSolutions/blue-repo/blob/DatabaseHandler/ASP-WCF/MvcMovie/MovieService/IDatabaseHandler.cs

Movie database handler class:
https://github.com/TaviscaSolutions/blue-repo/blob/DatabaseHandler/ASP-WCF/MvcMovie/MovieService/MovieDatabaseHandler.cs

Test cases for movie database handler class:
https://github.com/TaviscaSolutions/blue-repo/blob/DatabaseHandler/ASP-WCF/MvcMovie/MovieFixtures/DatabaseHandlerFixture.cs