cubicweb #2527660 Enable a definition of html cleaner rules per user or per group of users [open]

If one wants to allow certain tags on a cubicweb instance (for example iframes in BlogEntries), the permission can only be set for the entire instance, thus all the users.

It would be useful to be able to define rules for each groups. For example trusted users in admin group or staff group can use iframes, but registered users or anon cannot.

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