Add server.address property and update issuer field in LoginController to use dynamic server address. Modify SQL query in PrivilegedUserMapper to simplify permissions retrieval.

backend/src/main/resources/application.properties

@@ -8,4 +8,5 @@ cors.allowed-origins=${CORS:https://alttd.com}
 login.secret=${LOGIN_SECRET:SET_TOKEN}
 particles.file_path=${user.home}/.altitudeweb/particles
 notification.server.url=${SERVER_IP:10.0.0.107}:${SERVER_PORT:8080}
+server.address=${SERVER_ADDRESS:https://alttd.com}
 logging.level.com.alttd.altitudeweb=INFO