Twitter Login Authentication

[hinsonl-evenset]

TODO:

• Need to link EQB account to Twitter account
• Modify user model for additional fields to support twitter userid and access token
• Handle login authentication:
  • Refer to: https://developer.twitter.com/en/docs/twitter-for-websites/log-in-with-twitter/guides/implementing-sign-in-with-twitter
  • Create a separate service to retrieve the request token (step 1) and access token (step 3) from above