Renamed tables.
Removed table stories and added stories directly to book.
Added migrate script to database schema 2.
Added dummy code to add or modify a category.
Added authentication form.
Added insert and update of books ans categories.
Removed derived database context.
Added delete a book.
Added authorize attribute to book and category creation/edit/delete.
Fixed error display for failed login.
Added login/logout link to master page.
Added authorization to tag add and delete.
Update sql data mapper.
Updated sql data mapper.
Changed description.