Update to encoding in listings data.

git-svn-id: https://plugins.svn.wordpress.org/cp-polls/trunk@1021963 b8457f37-d9ea-0310-8a92-e5e31aec5664
Update to listings.

git-svn-id: https://plugins.svn.wordpress.org/cp-polls/trunk@1021964 b8457f37-d9ea-0310-8a92-e5e31aec5664
Note about update in changelog.

git-svn-id: https://plugins.svn.wordpress.org/cp-polls/trunk@1021966 b8457f37-d9ea-0310-8a92-e5e31aec5664