[inria-2.3.1] Compatibility with newer overleaf version
Currently we support only 1.2.1 which is the version of the deployed server somewhere at Inria.
Let's track the progress on supporting 2.x.y here.
Updates 08/07/20
- initial 66ff3fbf / tests are failing hard
Updates 08/11/20
- update the login logic 36681fab / tests are green
Updates 08/12/20
- rebase on master