[FIX][ENH] Trackers: radio button field and few others now have content value validation
Tracker radio content value validation on preview and save actions. If the value that comes from the frontend is not among the options values for radio input created by the owner of the tracker, we return "Invalid Value" as the error value.
This merge request is a duplicate of the one launched by @johnkeychishugi !1423 (closed)
It just needed a rebase.