Add some language filtering options for WPML

git-svn-id: https://plugins.svn.wordpress.org/opensearchserver-search/trunk@978494 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add icon for plugin management in Wordpress 4.0

git-svn-id: https://plugins.svn.wordpress.org/opensearchserver-search/trunk@978510 b8457f37-d9ea-0310-8a92-e5e31aec5664