changing default to on

On new book creation, setting the default to 'on' will allow more people to derive benefit from the built-in license module. Users would still have to choose a license in 'Book Info' as demonstrated in the youtube video https://www.youtube.com/watch?v=3Zz6fJm9cWQ&feature=youtu.be 

Checking both the 'display the copyright license' checkbox in 'Appearance->Theme Options' and choosing a license in 'Book Info' are what is required to display creative commons copyright information on the footer of every web page and make it through the export routines.