Blind attempt to fix crashing configuration page if bgJS is disabled

This might help #643 but I could not reproduce the reported issue

app/src/main/java/nodomain/freeyourgadget/gadgetbridge/service/devices/pebble/webview/GBWebClient.java

@@ -85,7 +85,7 @@ public class GBWebClient extends WebViewClient {
 
     private WebResourceResponse mimicReply(Uri requestedUri) {
         if (requestedUri.getHost() != null && (StringUtils.indexOfAny(requestedUri.getHost(), AllowedDomains) != -1)) {
-            if (internetHelperBound) {
+            if (GBApplication.getGBPrefs().isBackgroundJsEnabled() && internetHelperBound) {
                 LOG.debug("WEBVIEW forwarding request to the internet helper");
                 Bundle bundle = new Bundle();
                 bundle.putString("URL", requestedUri.toString());