Conference Actions

Get information from the asterisk about running conferences.

Indeed this is a little more complicated. Based on the build-in modules
of your asterisk it is possible that MeetMe - Conferences aren't supported (they are deprecated anyway)

- or - 

if your asterisk is too old you won't be able to use the confbridge commands.
But if everthing works as usual you should get an error response for using an unknown command.

I'm looking for a more intuitive way to avoid sending unknown commands in the future. But
at this moment i just want to add the missing actions.