Fix redirect url building on py2.7

misago/users/views/auth.py

@@ -24,10 +24,10 @@ def login(request):
             if is_redirect_safe:
                 redirect_to_path = urlparse(redirect_to).path
                 if '?' not in redirect_to_path:
-                    redirect_to_path = '{}?'.format(redirect_to_path)
+                    redirect_to_path = u'{}?'.format(redirect_to_path)
                 else:
-                    redirect_to_path = '{}&'.format(redirect_to_path)
-                redirect_to_path = '{}ref=login'.format(redirect_to_path)
+                    redirect_to_path = u'{}&'.format(redirect_to_path)
+                redirect_to_path = u'{}ref=login'.format(redirect_to_path)
                 try:
                     return redirect(redirect_to_path)
                 except NoReverseMatch: