Show a confirmation dialog when a user is sending the very first letter.
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Purpose
=========
It happens from time to time that a letter gets sent by accident to a
final customer. This situation is always a bit problematic and is
usually only uncovered when it is too late. Having an additional
warning when sending the very first letter should help avoid that kind
of issue.
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Specifications
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Display the following warning when the user tries to send a snailmail
letter for the first time (from an invoice or from a follow-up report):
'You are about to send this invoice/follow-up report by post. Are you
sure you want to continue?' Confirm/Cancel
closesodoo/odoo#47861
Taskid: 2215091
Related: odoo/enterprise#9326
Signed-off-by: Yannick Tivisse (yti) <yti@odoo.com>
Kevin Baptiste
b83e783700