Finally!!

Finally!!
Extension management javascript is just about complete.  Priorities can now
be dyamically added and all other priorities will be renumbered to suit.
The interface is entirely drawn in javascript and is accessible via a PHP
class which calls a Javascript class.  Inspired by Horde_Tree and functions
similarly.

Todo on the dialplan manager:
* Support removing priorities
* Support adding/removing extensions
* Flesh out the application list (need PHP to populate js arrays)
* Perfect the layout of the UI.  Thinking need to move to divs instead of tables

git-svn-id: https://svn.alkaloid.net/gpl/shout/trunk@91 06cd67b6-e706-0410-b29e-9de616bca6e9