split liteauth into token, auth, quota stuff

three new middlewares istead of liteauth

  liteauth_token - parses cookies and creates auth tokens
  liteauth - authenticates user through Google Oauth2
  litequota - applies quotas and enforces them

pipeline placement: liteauth_token liteauth litequota
Merge pull request #1 from pkit/refactor_split

split liteauth into token, auth, quota stuff