unify url handling for routes and redirect

src/Response/Redirect.php

@@ -19,7 +19,7 @@ class Redirect implements IRedirect
         if (preg_match('/^http(s)?/', $this->target) === 1) {
             $link = $this->target;
         } else {
-            $link = \Container::$request->getBase() . '/' . $this->target;
+            $link = \Container::$request->getBase() . $this->target;
         }
 
         return $link;