added linkurls option to gallery shortcode handler

git-svn-id: https://plugins.svn.wordpress.org/wunderslider-gallery/trunk@764693 b8457f37-d9ea-0310-8a92-e5e31aec5664
line endings in main file

git-svn-id: https://plugins.svn.wordpress.org/wunderslider-gallery/trunk@764695 b8457f37-d9ea-0310-8a92-e5e31aec5664
more line endings

git-svn-id: https://plugins.svn.wordpress.org/wunderslider-gallery/trunk@764696 b8457f37-d9ea-0310-8a92-e5e31aec5664