fix some issue

git-svn-id: https://plugins.svn.wordpress.org/news-headline-ticker/trunk@985177 b8457f37-d9ea-0310-8a92-e5e31aec5664
compatibility with wordpress 4.0

git-svn-id: https://plugins.svn.wordpress.org/news-headline-ticker/trunk@985179 b8457f37-d9ea-0310-8a92-e5e31aec5664