Fix incorrect URLs being generated for menu items that are part of a custom top-level menu.

git-svn-id: https://plugins.svn.wordpress.org/quick-configuration-links/trunk@1048046 b8457f37-d9ea-0310-8a92-e5e31aec5664
Version 1.4.5, tested up to WP 4.2-alpha.

git-svn-id: https://plugins.svn.wordpress.org/quick-configuration-links/trunk@1048057 b8457f37-d9ea-0310-8a92-e5e31aec5664
Stable = 1.4.5

git-svn-id: https://plugins.svn.wordpress.org/quick-configuration-links/trunk@1048058 b8457f37-d9ea-0310-8a92-e5e31aec5664