Release v1.3.1

git-svn-id: https://plugins.svn.wordpress.org/mapsian/trunk@936846 b8457f37-d9ea-0310-8a92-e5e31aec5664
Release v1.3.1

git-svn-id: https://plugins.svn.wordpress.org/mapsian/trunk@936847 b8457f37-d9ea-0310-8a92-e5e31aec5664