Store a lot less on the session to avoid hitting 4k limit for some user profiles
Store a lot less on the session to avoid hitting 4k limit for some user profiles

There is a lot of information that comes from omniauth. In practice,
strap only uses:

- email
- nickname
- name
- token

Nothing from the 'extra' key is used, so we can create a new hash that
just has 'info' and 'credentials'

mikemcquaid/strap,mikemcquaid/strap,mikemcquaid/strap