Added Relax NG schema files for languageBook and languageBookTopic files.
Added a catalog file that maps any resource ending in languageBook.rng or languageBookTopic.rng to the appropriate schema files.
Icons to be used from the CSS files to style list items and links.
An empty language book topic.
Add a Schematron file to check different constraints on the number of words.
Add example content from the actual book.
New file templates.
Add CSS files.
Add framework files.