FIX #16246 TIME 0:45 delete attachment in email drafts when deleting attachment + let user add other attachments in email if draft

FIX #16417 TIME 0:10 Improve control for senders, recipients and diffusionList in controlAdjacentData

(cherry picked from commit 470085ae)

(cherry picked from commit ce172465)

FEAT #14946 TIME 0:15 Improve mandatory file param in indexing form administration + wording + js error in technical informations and user redirection