Completely HTML-ize help transforms. Add intentionally undocumented :exporthelp.

common/components/protocols.js

@@ -46,7 +46,7 @@ function fakeChannel(orig)
 function redirect(to, orig)
 {
     let html = <html><head><meta http-equiv="Refresh" content={"0;" + to}/></head></html>.toXMLString();
-    return makeChannel(dataURL('text/html', html), orig);
+    return makeChannel(dataURL('text/html', html), ioServices.newURI(to, null, null));
 }
 
 function ChromeData() {}