only display the unhide projects

ui/nG6/lib/class.tx_nG6_db.php

@@ -45,12 +45,15 @@ class tx_nG6_db {
 	function select_all_user_projects($user_group, $orderby='', $limit='') {
 
 		$projects = array();
+
 		// If the user is not logged on display demonstration project
+		$where = 'tx_nG6_project.hidden=0 AND ';
 		if (!$GLOBALS['TSFE']->loginUser) {
-			$where = 'fe_group=0';
+			$where .= 'fe_group=0';
 		} else {
-			$where = 'fe_group IN ('.tx_nG6_db::get_user_groups($user_group).')';
+			$where .= 'fe_group IN ('.tx_nG6_db::get_user_groups($user_group).')';
 		}
+
 		$orderby='tx_nG6_project.name ASC';
 		//First, get the analyzis project-scale
 		$queryParts = array(