Onboard wiki maintainers (Kewl, Det, Skydiver, Flyingping, EDH, Neitsab)

Fix #426 (closed), #427 (closed), #428 (closed), #429 (closed), #430 (closed) and #433 (closed).

---

Let's wait a day or two for the wiki maintainers to confirm the access.

Fix #375 (closed)

group_vars/all/archusers.yml

@@ -410,6 +410,13 @@ arch_users:
     ssh_key: muflone.pub
     groups:
       - tu
+  neitsab:
+    name: "Bastien Traverse"
+    ssh_key: neitsab.pub
+    hosts:
+      - mail.archlinux.org
+    groups:
+      - support-staff
   nicohood:
     name: "NicoHood"
     ssh_key: nicohood.pub