Switched the AppSettings form to use a TextArea for AppSetting Values and Descriptions.
Added a method that pulls out the Cube's hours from AppSettings
Fixed a bug where validation would fail when adding a new book (that needs a metabook) as it was not correctly validating CourseNumberField
Fixed a bug where you couldn't edit a book if you didn't check off the first book in the list
Added some consistency to a POST variable name that sometimes was capitalized
Added a field to the sold.html email template that allows a custom message to be inserted from the DB AppSettings.
Merge branch 'emailmessage' of https://github.com/kd7iwp/cube-bookstore into emailmessage