fix for future versions of safari

git-svn-id: https://plugins.svn.wordpress.org/safari-push/trunk@823074 b8457f37-d9ea-0310-8a92-e5e31aec5664
Workaround for Google Chrome for Mac identifying itself as Safari

git-svn-id: https://plugins.svn.wordpress.org/safari-push/trunk@823782 b8457f37-d9ea-0310-8a92-e5e31aec5664
Minified Javascript, corrected a regression that broke Safari detection

git-svn-id: https://plugins.svn.wordpress.org/safari-push/trunk@823999 b8457f37-d9ea-0310-8a92-e5e31aec5664