feat(server): enable fxa oauth login + save to db

Partial fix for issue 24.

Changes of note:
  * Add DB creation and DB client, ugly but (barely) functional
  * Remove jscs rule requiring a space after 'function'
  * Use hapi-auth-cookie to manage sessions, bell to (sorta?) help with oauth
  * Use 'wreck' to make outgoing HTTP requests from inside the route handler
  * Add mozlog logging: heka compatible in prod, yet readable for local dev