Switched to using roles instead of user levels to prevent deprecated notices

git-svn-id: https://plugins.svn.wordpress.org/nofollow-links/trunk@780607 b8457f37-d9ea-0310-8a92-e5e31aec5664
changing stable version to 1.0.7

git-svn-id: https://plugins.svn.wordpress.org/nofollow-links/trunk@780610 b8457f37-d9ea-0310-8a92-e5e31aec5664