Add site global header footer  option

git-svn-id: https://plugins.svn.wordpress.org/oh-add-script-header-footer/trunk@1052755 b8457f37-d9ea-0310-8a92-e5e31aec5664
change version tested up to number 4.1

git-svn-id: https://plugins.svn.wordpress.org/oh-add-script-header-footer/trunk@1052756 b8457f37-d9ea-0310-8a92-e5e31aec5664