Respect lowercase_tags option on categoriesAsTags

git-svn-id: http://plugins.svn.wordpress.org/wp-parsely/trunk@727526 b8457f37-d9ea-0310-8a92-e5e31aec5664
Pass options to getTagsAsString

git-svn-id: http://plugins.svn.wordpress.org/wp-parsely/trunk@727527 b8457f37-d9ea-0310-8a92-e5e31aec5664