Added Split and Sub menu actions, version 0.4

git-svn-id: https://plugins.svn.wordpress.org/jc-submenu/trunk@786443 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added Child Page Order By Feature #4794231

git-svn-id: https://plugins.svn.wordpress.org/jc-submenu/trunk@792420 b8457f37-d9ea-0310-8a92-e5e31aec5664