Hotfix for performance issue and center "rules"-btn

- Delete temporary the async promise function, because it works not like
it should work. (We will test some methods to increase the performance,
but the performance is already okay)
+ Add suggestion from @grenzor #21 to center the "rules-status"-button

core_js/write_version.js

@@ -2,5 +2,5 @@
  * This file writes only the version into every page.
  * @return version
  */
-var version = "1.2.1.0";
+var version = "1.2.1.1";
 $('#version').text(version);