Move board collapse/expand mode to server side to avoid board flickering

app/Helper/Board.php

@@ -0,0 +1,24 @@
+<?php
+
+namespace Helper;
+
+/**
+ * Board Helper
+ *
+ * @package helper
+ * @author  Frederic Guillot
+ */
+class Board extends \Core\Base
+{
+    /**
+     * Return true if tasks are collapsed
+     *
+     * @access public
+     * @param  integer   $project_id
+     * @return boolean
+     */
+    public function isCollapsed($project_id)
+    {
+        return $this->userSession->isBoardCollapsed($project_id);
+    }
+}