This change fix iter_documents_by_types() function which can now return documents

Closes: 15967@zendesk

Closes: 51536@sibi 51679@sibi

the old one is not available anymore

Closes: 54360@sibi 54388@sibi 54364@sibi

they have changed some html tag we used for item_xpath and handle pagination

Closes: 14561@zendesk

On this connector, we can get for sure the firstname and the lastname. We still
fill up the "name" field, because there is more information in it (firstname,
others names, last names...)

Example:
"name" = "Robert Jean Martin"
"firstname" = "Robert"
"lastname" = "Martin"

Closes: 50806@sibi

Closes: 32310@sibi 32311@sibi

Closes: 36071@sibi 36073@sibi 29607@sibi