Changes:

- Added ability to search categories in the control panel
- Added settings to control category display order (alphabetical or by total articles)
- Added "featured" articles that appear at the top of their category
- Added more database statistics to control panel index
- Added ability to specify re-usable article headers and footers
- Added option to override date created/modified or have them set automatically
- Added "date modified" field to articles
- Added ability to publish/unpublish categories
- Article browser now shows number of views
- Article browser now shows rating, number of ratings
- Added option limit number of articles to show on automated reply system
- Added ability to publish/unpublish articles (only "published" articles are
  displayed in the knowledge base)
- Added settings to control article display order (by id, date added, date modified, rating, number
  of views, or alphabetical)
- Added setting to limit depth of category select menu

Bugfixes:

- Glossary term definition field is now a text field instead of a textarea, preventing
  the user from entering newlines which mess up the JavaScript.
- Fixed missing ratings in article index
- Fixed bug that didn't allow "Knowledge Base Path" setting to be blank (required for
  installations not in a subdirectory)
- Fixed bug that did not allow duplicate key names in select menus in the control panel
  (prevented multiple categories with the same name).
- Fixed template bug with articles that had quotes in the preview