Searchs now appear latest first

When searching, stories now appear latest-first, same as the index and
author index pages.

src/pages/search_sql.etlua.in

@@ -48,7 +48,9 @@ WHERE
 	<% local n,v,t = unpack(tag) -%>
 	<% n = (n == "-" and "NOT" or "") -%>
 	AND <%= n %> tags.tag = ?
-<% end -%>
 GROUP BY
 	posts.id
+<% end -%>
+ORDER BY
+	posts.post_time DESC
 ;