Can you set up the proxy temporarily to allow all traffic through by changing
<ProxyConfig allowedReferers="http://mor"
mustMatch="true">
to
<ProxyConfig allowedReferers="*"
mustMatch="false">
If this does not work to allow everything through, then I would use Google Chrome Developer Tools F12 to try to figure out the problem.
Also you have a folder on the IIS server (web server) that has a folder
c$\inetpub\wwwroot\mor\mor_js_dev\DotNet where the proxy files are stored?
I would move these files to a folder directly off c$\inetpub\wwwroot so it can be accessed by other HTML5/JavaScript apps.