Implement phase 1 of account/profile API

As an initial POC, we will be using the existing profile endpoint in Drupal to build up the base of the user object to be returned. We should map all fields except the ECA, which we will be calculating ourselves. We will need to have a set of credentials internally so that we can send a bearer token to get the email as well, which won't be available otherwise.

For an initial POC, we will want to remove the email entirely, as the mechanism to validate if the user can request it does not yet exist. That will be taken care of once 0.7.x releases in the coming weeks.