appendConfigData only for usermod + optimizations

- rename replaceOption to rOption
- rename removeOptions to dOptions
- set oAppend buffer size back to 3096
- WLEDMM warning on settings2D Populate
- add AppendConfig per usermod
- add request parameter to getSettinsJS
- add lookupName

wled00/wled_server.cpp

@@ -521,7 +521,7 @@ void serveSettingsJS(AsyncWebServerRequest* request)
     return;
   }
   strcat_P(buf,PSTR("function GetV(){var d=document;"));
-  getSettingsJS(subPage, buf+strlen(buf));  // this may overflow by 35bytes!!!
+  getSettingsJS(request, subPage, buf+strlen(buf));  // this may overflow by 35bytes!!! WLEDMM add request
   strcat_P(buf,PSTR("}"));
   request->send(200, "application/javascript", buf);
 }