ADD radio buttons field type


git-svn-id: http://svn.resourcespace.org/svn/resourcespace@5522 c08608d7-6e46-0410-86ca-f2a6f1370df5
Added new shared collections page linked to from collection_manage.php


git-svn-id: http://svn.resourcespace.org/svn/resourcespace@5523 c08608d7-6e46-0410-86ca-f2a6f1370df5