add setting() helper; fix invalid defaults for mysql in table

app/Support/helpers.php

@@ -0,0 +1,16 @@
+<?php
+
+/**
+ * Shortcut for retrieving a setting value
+ */
+if (!function_exists('setting')) {
+    function setting($key, $value = null)
+    {
+        $settingRepo = app('setting');
+        if($value === null) {
+            return $settingRepo->get($key);
+        } else {
+            $settingRepo->set($key, $value);
+        }
+    }
+}