Authentication and authorization

[oliverbarnes]

Thinking of using Ueberauth and its oauth strategies for facebook, twitter, github etc

[oliverbarnes]

TODO:

• [x] Install Ueberauth with facebook and github strategies
• [ ] add client ids and secrets for facebook and github apps
• [ ] implement endpoints

[oliverbarnes]

gave up on Ueberauth, going with porting current hand-rolled auth from ruby api

[oliverbarnes]

auth done after 73b3bbf6f94361abeb750ee4972eb204b93a6803