FT: ease triaging new issues by sorting them by creation date

wiki/src/contribute/working_together/roles/foundations_team.mdwn

@@ -39,7 +39,7 @@ The Tails Foundations Team is responsible for:
   or merge a draft proposed by Technical Writer apprentices;
 
 * triaging
-  [newly created issues](https://gitlab.tails.boum.org/groups/tails/-/issues?scope=all&utf8=%E2%9C%93&state=opened&not[label_name][]=To%20Do&not[label_name][]=Doing&not[label_name][]=Needs%20Validation)
+  [newly created issues](https://gitlab.tails.boum.org/groups/tails/-/issues?scope=all&utf8=%E2%9C%93&state=opened&not[label_name][]=To%20Do&not[label_name][]=Doing&not[label_name][]=Needs%20Validation&sort=created_date)
   when they are more technical than feature
   request (those are handled by the UX designers) or about bugs;
   reassigning to whoever is on Help Desk duty any new issue that's