* Begin adding preinstalled plugin documentation.
Also add information about how the titles of the plugins are displayed and detected.
Make page visible on the websites Table of Contents.
* Add note about plugin loading based on file name.
* Added all monitoring-plugins URLs.
* Format URLs on the service plugin docs list.
* Correct a URL on the plugins list.
* Removed leftover text from plugin list docs.
* Add pkg-nagios-plugins-contrib plugins to docs.
* Add DSA pkg-nagios-plugins-contrib plugins to docs
* Added a few missing lines of pkg-nagios-plugins-contrib text.
* Remove links plugins we dont have URL for.
Add a few more pkg-nagios-plugins-contrib ones.
* Remove list. Point to the main sources directly.