#23 - Improved different permalink structures

The plugin now works with all default permalink structures of
WordPress(with dates, post id, post name, etc)
A fix for #24 was introduced - when searching in different language,
sometimes WP would set an error in the query vars, because no rule was
matched.
About #23 - the automatic permalink fixing has been improved as well,
now generating even more correct URL's(I'm yet to find an incorrect one
for now).