Built a new routine for intro tours.

config/intro.php

@@ -0,0 +1,25 @@
+<?php
+/**
+ * intro.php
+ * Copyright (c) 2017 thegrumpydictator@gmail.com
+ * This software may be modified and distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International License.
+ *
+ * See the LICENSE file for details.
+ */
+
+declare(strict_types=1);
+
+/*
+ * Always make sure intro is the first element (if any) and outro is the last one.
+ */
+
+return [
+    'index' => [
+        'intro'            => [],
+        'accounts-chart'   => [],
+        'box_out_holder'   => [],
+        'all_transactions' => ['position' => 'left'],
+        'help'             => ['position' => 'bottom'],
+        'outro'            => [],
+    ],
+];