In 16.0, at 6a42ec7c73
an error was introduced redirecting users to the configuration panel
when clicking the 'sync' button for extenal providers in calendar.
This simply replaces that call with a redirect to an authentication url
received from the back-end.
task-3131128
closes odoo/odoo#111392
X-original-commit: 0574c18acd70c3fe52cdb5cbe563ffa02f5f5ad3
Signed-off-by: Warnon Aurélien (awa) <awa@odoo.com>
Signed-off-by: Thiry Renaud (reth) <reth@odoo.com>