Refactoring: added controlled middleware and changed response class

app/Core/Controller/BaseException.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace Kanboard\Core\Controller;
+
+use Exception;
+
+/**
+ * Class AccessForbiddenException
+ *
+ * @package Kanboard\Core\Controller
+ * @author  Frederic Guillot
+ */
+class BaseException extends Exception
+{
+    protected $withoutLayout = false;
+
+    /**
+     * Get object instance
+     *
+     * @static
+     * @access public
+     * @param  string $message
+     * @return static
+     */
+    public static function getInstance($message = '')
+    {
+        return new static($message);
+    }
+
+    /**
+     * There is no layout
+     *
+     * @access public
+     * @return BaseException
+     */
+    public function withoutLayout()
+    {
+        $this->withoutLayout = true;
+        return $this;
+    }
+
+    /**
+     * Return true if no layout
+     *
+     * @access public
+     * @return boolean
+     */
+    public function hasLayout()
+    {
+        return $this->withoutLayout;
+    }
+}