Issue: Integration with XenForo FAQ system

XenForo has a simple help framework which has some handy features.
Basically when you activate a function, the description for that function appears. For example if you create a trophy in xenforo then the trophy will be listed. See: http://xenforo.com/community/help/trophies
Several addons hook into this, to make help text appear on a help page.

Vaultwiki should hook into this, allowing wiki articles in the xf help framework so that users can expand it.
This will increase the appeal of VW4 to xenforo webmasters.

This feature request relates to: https://www.vaultwiki.org/issues/2640/
https://www.vaultwiki.org/threads/5310/