Merge branch 'appsettings'
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
Merge branch 'emailmessage' of https://github.com/kd7iwp/cube-bookstore into emailmessage