Fix a subscribe page if has querystring
Remove constraints
Fix ApplicationController#url_from_path

ref: https://github.com/fastladder/fastladder/pull/93#issuecomment-15038989
Fix endpoint url on user controller spec.
Merge pull request #94 from aerith/fix-user-spec-endpoint

Fix endpoint url on user controller spec.
s/Factory/FactoryGirl.create/

See also 700162c3b6a45c8644a01e70a50def1821351505
Merge pull request #93 from ykzts/fix/subscribe-url-querystring

Fix a subscribe page if has querystring