add vuejs3_dev to composer.json and ci javascript config file to switch between vuejs dev and prod version, alter FHC-Footer to use new config

application/config/javascript.php

@@ -0,0 +1,7 @@
+<?php
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+// use vuejs dev version
+$config['use_vuejs_dev_version'] = false;
+// use bundled javascript
+$config['use_bundled_javascript'] = false;