Merge pull request #364 from ArcBees/mmc_fix_submit

Fix #363 : form.submit()

gwtquery-core/src/main/java/com/google/gwt/query/client/GQuery.java

@@ -234,6 +234,9 @@ public class GQuery implements Lazy<GQuery, LazyGQuery> {
       if (o instanceof Function) {
         return new GQuery(((Function) o).getElement());
       }
+      if (JsUtils.isElement(o)) {
+        return new GQuery(JsUtils.<Element> cast(o));
+      }
       if (o instanceof JsonBuilder) {
         return new GQuery(((JsonBuilder) o).<Element>getDataImpl());
       }