cubicweb-forge #2423771 Add ticket number in message after creation [open]

When creating a ticket, we fallback on the project page and there is a msg link to go to the created ticket. This is usefull.

An improvement would be to have the #ID in that message so as to copy/paste it in a commit message (when creating a small ticket for something we've just fixed in the source).

done in<not specified>
closed by<not specified>