FIX: permalink normalization not applied at constraint

implement permalink import for lithium

lib/permalink_constraint.rb

@@ -1,7 +1,7 @@
 class PermalinkConstraint
 
   def matches?(request)
-    Permalink.where(url: request.fullpath[1..-1]).exists?
+    Permalink.where(url: Permalink.normalize_url(request.fullpath)).exists?
   end
 
 end