Implemented authorized users and user roles
Add additional file formats to the previous entry
:w
Hide the 'Edit' button from non-Administrators
List the genres inline
Handle users who are "de-authorized" after registering
Provide positive feedback when settings are successfully saved
Provide positive feedback on successful save of edit
Edit authors like authorized users in settings
Added breadcrumb navigation to the library, genre, author, and book pages
Implemented basic pagination for the library view