Added custom error page for IIS

Author: Martin Atanasov

web.config

@@ -96,6 +96,12 @@
             <remove fileExtension=".woff" />
             <mimeMap fileExtension=".woff" mimeType="application/x-font-woff" />
         </staticContent>
+        <httpErrors errorMode="DetailedLocalOnly" defaultResponseMode="File" >
+         <remove statusCode="403" />
+		 <remove statusCode="404" />
+		 <error statusCode="403" path="40x.html" />
+         <error statusCode="404" path="40x.html" />
+       </httpErrors>
     </system.webServer>
 
 </configuration>