use the passed in option to determine what xsl to run
XSL arg is optional
start.html now included in zipped EPUB
Module TOC links to correct HTML file

Instead of linking to `content/content/pr01.html` it links to
`content/pr01.html`
Explicitly include the start.html file when creating an epub/zip file

It appears `zip` on different OSs handle a string with a wildcard
differently (OSX will match all the files and include them and debian
will seaerch for and add a single file named "*.html"
Merge pull request #41 from Connexions/start-xsl

Offline zip now has start.html
Removed ids on elements that occur in a glossary so there is no chance for duplicate ids

A `cnx:definition` element that occurs in the `cnx:content` element was
being cloned (with ids) and inserted into the glossary causing the EPUB
generation to fail
Merge pull request #43 from Connexions/glossary-duplicate-ids

Removed ids on elements that occur in a glossary so there is no chance f...
Added documentation for removing glossary ids
Update css/ccap-base.less

broke protocol to remove obsolete 2col bio rules that keep getting merged to master. apologies
compiled new css after removal of obsolete 2col bio rules removed
Merge branch 'master' into slicer-staging