Investigate ability to alllow crossdomain requests with newer browser versions

The maps server is simply not allowed to reach out to the internet.  The same 
origin policy of browsers requires us to use the proxy script to ask the maps 
server to pull the GetCapabilities document. This is not possible.
Saul says that there is a *possibility* of having a type of "crossdomain"  
file on the server to relax the same origin policy for newer browsers.

This would allow the client to make a GetCapabilities request to an external 
WMS directly.

Original issue reported on code.google.com by Aleda.Fr...@state.ma.us on 13 Dec 2011 at 5:45

Letractively / morisoliver

Investigate ability to alllow crossdomain requests with newer browser versions #102