Add links to plugin list. Fix timezone correction. Fix links to settings page.

git-svn-id: https://plugins.svn.wordpress.org/postie/trunk@993424 b8457f37-d9ea-0310-8a92-e5e31aec5664
releasing 1.6.1

git-svn-id: https://plugins.svn.wordpress.org/postie/trunk@993425 b8457f37-d9ea-0310-8a92-e5e31aec5664