Add lamassu-revoke and lamassu-users (#270)

* lamassu-list-users

Lists registered users to the admin panel

* Add in unregister function to revoke token access

* Create lamassu-revoke

* Changed name to lamassu-users

* Update login.js

* Update login.js

* Add lamassu-users & lamassu revoke to package.json

* Re-add missing comma.

bin/lamassu-users

@@ -0,0 +1,9 @@
+#!/usr/bin/env bash
+set -e
+
+if [ "$(whoami)" != "root" ]; then
+  echo -e "This script has to be run as \033[1mroot\033[0m user"
+  exit 3
+fi
+
+su - postgres -c "psql \"lamassu\" -Atc \"select * from user_tokens\""