Adding 1.2.1 changes

git-svn-id: https://plugins.svn.wordpress.org/wp-nested-pages/trunk@1052103 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updating stable to 1.2.1

git-svn-id: https://plugins.svn.wordpress.org/wp-nested-pages/trunk@1052106 b8457f37-d9ea-0310-8a92-e5e31aec5664