update 3.1

git-svn-id: https://plugins.svn.wordpress.org/simple-gallery-odihost/trunk@836555 b8457f37-d9ea-0310-8a92-e5e31aec5664
3.1 index.php

git-svn-id: https://plugins.svn.wordpress.org/simple-gallery-odihost/trunk@836556 b8457f37-d9ea-0310-8a92-e5e31aec5664
3.1 gallery.php

git-svn-id: https://plugins.svn.wordpress.org/simple-gallery-odihost/trunk@836557 b8457f37-d9ea-0310-8a92-e5e31aec5664
3.1 gallery.js

git-svn-id: https://plugins.svn.wordpress.org/simple-gallery-odihost/trunk@836558 b8457f37-d9ea-0310-8a92-e5e31aec5664