fixes #285 - Use Charting system which can work offline

• dashboard charts
• statistics page
• host show page

additionally, main menu buttons and bookmarks drop down are easier to handle and read

Fixes #101 - Generate rdoc files and html links on the puppetclasses page

Rewite rdocs if required by the prepare phase
Incorporate Fank Sweetser's :: patch
Incorporate a url_helper suggested by Ohad
Added a new interface via links on the supported environments list

fixes #89 - this adds basic graphs and charts for your inventory, it
also includes minor changes to the dashboard graphs