Our Link Overlay only returns the urlname. It should also return the url levels if url nesting is enabled
It is not such a big issue. The page gets redirected to nested url and url nesting is disabled by default anyways. So I will clear the milestone.
Refactors the url_nesting feature. Closes #143
Nested urls are now stored as complete path in the `Page#urlname` column. So no more nested level limitations and a lot less logic to retrieve the page. \o/