Address dynamic class property deprecation warnings

templates/FormView.php

@@ -8,6 +8,15 @@
 
 class FormView extends SubTemplate
 {
+	private $content_below;
+	private $content_above;
+	private $data;
+	private $missing;
+	private $fields;
+	private $request_method;
+	private $request_url;
+	private $title;
+
 	public function __construct(Form $form, $title = '')
 	{
 		$this->title = $title;