Implemented recent compares widget.

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-compare-list/trunk@932945 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updated plugin version to 1.1.0 and committing lost widget.php file.

git-svn-id: https://plugins.svn.wordpress.org/woocommerce-compare-list/trunk@932947 b8457f37-d9ea-0310-8a92-e5e31aec5664