This revision includes the following changes:

 - [1] The browse/index.php file can now list the number of books available by course number and section
 - [2] The sell-books/index.php includes a temporary table in the Dependent Courses section as the CSS in styles/sell.css is built to handle a responsive table design
 - [3] In the root configuration file, the FFI\BE\ACTIVE constant was moved to the Interception_Manager class, and replaced with FFI\BE\ENABLED. The ACTIVE constant is used to indicate whether or not the Interception_Manager class has activated the plugin for this page, while the ENABLED plugin simply indicates whether or not Wordpress has activated this plugin. The FFI\PLUGIN_PAGE constant was also added to the Interception_Manager class to indicate that a generic plugin developed by ForwardFour Innovations is active on the current page, useful if a theme wishes to respond differently to the content on the current page, if a ForwardFour plugin is active.
 - [4] The SQL statement in the Book_Courses class was corrected to retrieve books within the expiration range, not ones that have already expired
 - [5] The Book_Overview class can now retrieve a listing of course sections with their respective number of books, as well as count the total number of avaliable books that have not expired
 - [6] course.css was added to style the browse/index.php file
 - [7] actions.png includes a sprite for use on the sell-books/index.php page for adding or deleting new rows to and from the Dependent Courses table
This revision includes the following changes:

 - [1] The Louis Armstrong splash image is replaced with a splash image containing sheet music
 - [2] The course book listing page has begun to become styled with its theme of colored disks
This revision includes the following changes:

 - [1] The browse/index.php page can now display a listing of the most recently added books to a course
 - [2] course.css includes styles for the sidebar on the browse/index.php page
 - [3] actions.png now includes a dollar sign icon for use in the sidebar of the browse/index.php page
 - [4] The Book_Overview class can now generate a listing of recently added books when given a course URL identifier
 - [5] The General class now includes a method for getting a small background image of a book cover for use in a sidebar Recent Book or Popular Book listing