Added the option to open the page in another tab

git-svn-id: https://plugins.svn.wordpress.org/footer-pop-up-banner/trunk@1037595 b8457f37-d9ea-0310-8a92-e5e31aec5664
Added the option to open the page in another tab

git-svn-id: https://plugins.svn.wordpress.org/footer-pop-up-banner/trunk@1037602 b8457f37-d9ea-0310-8a92-e5e31aec5664