cubicweb-tracker #3666727 Crash when deleting a Ticket in a Version with non-ascii "num" [validation pending]

This crash is due to a redirect the version: its rest_path implementation is broken, since it does not url quote it.

prioritynormal
typebug
done in1.16.0
load0.100
load left0.000
closed by#f635cd1d0737 [entities/version] fix ``rest_path`` with "bad" project name and version number
patch[entities/version] fix ``rest_path`` with "bad" project name and version number [applied]