- fix the 46 errors reported by the w3c html validator in appview.php?versionid=whatever
- fix the 97 errors reported by the w3c html validator in index.php
- remove the help about user rating as it doesn't exist anymore
- improve exisiting help documentation and FAQs (remove out of date
informations, dead link, etc.)
- add new help page for maintainers with details on how to maintain an application