Added ASP Controls to AddMovie.aspx
Changes:
- Added aspTextboxes to the form
- Added validators
- Site.css: Added a "validator" class that has a red font
Added "Add Movie" Functionality
Changes:
- MovieActions.cs:
   - Added enum MovieActionsErrorCode for Error reporting
   - Added AddNewMovie() method that returns an error code, or the ID of a new movie on success
- Movie.cs: Added a required string SubmitterID that is the GUID of the user that submitted the movie
- MovieDatabaseInitializer.cs: Added GUIDs to the Initial movies
- AddMovie.aspx: Added page title, button action, and status label
- AddMovie codeBehind: added click handler that adds a new movie from the form with MovieActions. At completion, it either prints an error on the page, or redirects to the new movie details page
- MovieDetails.aspx: removed some unneeded comments
- Deleted User_Profile.aspx