Implemented a Dynamic Profile Page
The profile page now retreives a user from the Profiles table in the database.
If a user is not found, a proper message is displayed. The page now retrieves a user based on the username in the query string. If no user is specified, then the current user is retrieved.

Next: Implement Edit Profile and query the database for the movies that the user has tagged.

Changes:
- Added: Profile.cs: the Model for binding a row of the "Profiles" table
- MovieContext: Added Profile to the DbContext
- Added: MovieDatabaseInitializer: populates the Profiles table with Sam and Trent
- Global.asax.cs: Added the ProductDatabaseInitializer to initialize the database on application start
- User_Profile.aspx: added an asp:FormView tag to view a bound Profile
- User_Profile.aspx.cs: Added the GetProfile() method to query the database for the Username in the query string.