Web book

this is the start of cleaning up the organization and getting the python code for creating the web book working.  there's still a few inconsistencies, esp with code and pre tags because of the introduction of bootstrap and some additional style sheets (I had to, for example, disable "prettify" on the beauitful soup output since the code tags were looking wonky).   At any rate, it's getting there and this is similar to the design work branch without any book length commits.