Fixes rendering when using Chameleon:
  ValueError: only strings can be translated, not: <ERP5Type.Message.Message for ...

/reviewed-on nexedi/erp5!747

/reviewed-on nexedi/erp5!765

adjust font url

/reviewed-on nexedi/erp5!759

These will be added by activity spawning mechanism: either "activate" or
"recurseCallMethod".

Subsequent activities will produce an empty dictionary, causing
inconsistencies in activity dependencies.

It is set in constructInstance from received activate_kw, but is then if
ActiveObject.activate is not used - as is the case when reindexObject is
made an alias of recursiveReindexObject (ex: ERP5.Document.Delivery), as
the latter calls recurseCallMethod which uses ActivityTool.activateObject
which (purposefully, visibly) ignores getDefaultActivateParameterDict
(unlike ActiveObject.activate).
Also, do not step on activate_kw, for readability.

Partial revert from 2f121c19

/reviewed-on nexedi/erp5!757

This is not used in this interface

now that we have ERP5 Login, reference is just reference.