to trunk v 1.4.0

git-svn-id: https://plugins.svn.wordpress.org/bxslider-wp/trunk@975622 b8457f37-d9ea-0310-8a92-e5e31aec5664
stable tag changed to 1.4.0

git-svn-id: https://plugins.svn.wordpress.org/bxslider-wp/trunk@975624 b8457f37-d9ea-0310-8a92-e5e31aec5664
fix type on stable tag

git-svn-id: https://plugins.svn.wordpress.org/bxslider-wp/trunk@975625 b8457f37-d9ea-0310-8a92-e5e31aec5664