pgAdmin 4, no built-in SSH tunnel config?
UPDATE:

SSH Tunneling is now available as of version 3.1 - https://www.pgadmin.org/docs/pgadmin4/development/release_notes_3_1.html



Original answer:

Looks like they plan on having it for v2.0, which could be up to a year away, though they say that they are open to having it sooner.


  I hope we'll be able to add SSH support sooner rather
  than later.


https://www.mail-archive.com/pgadmin-support@postgresql.org/msg15175.html