Revert broken change to setup

Author: jbrooksuk

resources/assets/js/cachet.js

@@ -310,6 +310,22 @@
         sparkLine();
     }
 
+    function goToStep(current, next) {
+        // validation was ok. We can go on next step.
+        $('.block-' + current)
+            .removeClass('show')
+            .addClass('hidden');
+
+        $('.block-' + next)
+            .removeClass('hidden')
+            .addClass('show');
+
+        $('.steps .step')
+            .removeClass("active")
+            .filter(":lt(" + (next) + ")")
+            .addClass("active");
+    }
+
     // Check for updates.
     if ($('#update-alert').length > 0) {
         $.ajax({