[Freeswitch-docs] Autogenerating Variables docs

[Ryan Harris]

> Before you invest more time in your django app, did you have a look at
> the templates confluence already provides? They're also kinda powerful
> and allow similar things but are contained within Confluence.

Generating the confluence markup outside of confluence has been the
easiest way so far :P

Maybe we can find a way to do this with Confluence builtins - the data
is meant to be portable.