Ludovic LANGE authored Jan 03, 2021 and hydrargyrum committed Jan 09, 2021

Authentication seems to have changed (#453), and in fact a few changes are needed
to make it work again:
* A new js page is now the target of the initial redirection chain,
* This page gives us a new parameter ('goto') which is needed by the authenticate
call
* and old cookies need to be cleared before the authenticate call (otherwise an error
is thrown)