Bugfix for the Navigation Shortcode

git-svn-id: https://plugins.svn.wordpress.org/my-glossar/trunk@772812 b8457f37-d9ea-0310-8a92-e5e31aec5664
Bugfix Navigation Shortcode

git-svn-id: https://plugins.svn.wordpress.org/my-glossar/trunk@772813 b8457f37-d9ea-0310-8a92-e5e31aec5664