v1.5.1 Minor Bugfixes

git-svn-id: https://plugins.svn.wordpress.org/bigmailchimp/trunk@789001 b8457f37-d9ea-0310-8a92-e5e31aec5664
v1.5.2 Tested w wp3.6.1

git-svn-id: https://plugins.svn.wordpress.org/bigmailchimp/trunk@789003 b8457f37-d9ea-0310-8a92-e5e31aec5664