Show "not hiring" text on index page for now.

content/hiring/_index.md

@@ -2,6 +2,13 @@
 aliases:
 - /hiring.html
 title: Jobs
----
+----
+
+We don't currently have any paid positions available. If you'd like to
+hear about future vacancies, please email {{<contactemail>}}.
 
-The Briar project is looking for the following people to join the team:
\ No newline at end of file
+If you're interested in getting involved as a volunteer, please [join
+the development mailing
+list](https://lists.sourceforge.net/lists/listinfo/briar-devel).
+Translators can volunteer through our [Transifex
+project](https://transifex.com/otf/briar).