Fix JS spec env.

* remove unnecesary files
* add quint stylesheet
Merge pull request #273 from simi/clean-spec-env

Fix JS spec env.
Refactor auth code

* don't use __container__
* register it as a factory on container and inject into routes and
  controller
* avoid afterSignIn errors by checking on hooksTarget, ApplicationRoute
  should register itself as a hooksTarget
* keep user info on auth