1.6b1 released

Add a "searchable" attribute for titles and chapter to allow the title or chapter not to be searchable in the search box
Fix the Class-Path property in the framework manifest which could prevent the project to be built on Mac OS X or Linux
Add a search option to also search the anchors in articles
Add an option to put a background under "code" and "source" elements
Add an option to put a background by default under "pre" elements
Add an API to allow to use docJGenerator as a library in another Java application
Increase the padding around the "messageBox" boxes
Add an optional "id" for chapter or titles to refer to it
Allow to name the "face" element as "family" for "font"
Allow to force the identifier for the table of content for a title or chapter in an article
Allow to add tables under li elements
Allow to specify the padding of table rows