1.5.3

git-svn-id: https://plugins.svn.wordpress.org/b09-link-to-existing-content/trunk@893486 b8457f37-d9ea-0310-8a92-e5e31aec5664
1.6: also load empty taxonomies

git-svn-id: https://plugins.svn.wordpress.org/b09-link-to-existing-content/trunk@893518 b8457f37-d9ea-0310-8a92-e5e31aec5664
1.6: updated version description

git-svn-id: https://plugins.svn.wordpress.org/b09-link-to-existing-content/trunk@893519 b8457f37-d9ea-0310-8a92-e5e31aec5664