GUACAMOLE-40: Define RD gateway and load balancing parameters for RDP.

guacamole/src/main/webapp/translations/de.json

@@ -302,6 +302,11 @@
         "FIELD_HEADER_ENABLE_SFTP"                : "Aktiviere SFTP:",
         "FIELD_HEADER_ENABLE_THEMING"             : "Aktiviere Theming:",
         "FIELD_HEADER_ENABLE_WALLPAPER"           : "Aktiviere Desktophintergrund:",
+        "FIELD_HEADER_GATEWAY_DOMAIN"   : "Domäne:",
+        "FIELD_HEADER_GATEWAY_HOSTNAME" : "Hostname:",
+        "FIELD_HEADER_GATEWAY_PASSWORD" : "Passwort:",
+        "FIELD_HEADER_GATEWAY_PORT"     : "Port:",
+        "FIELD_HEADER_GATEWAY_USERNAME" : "Benutzername:",
         "FIELD_HEADER_HEIGHT"          : "Höhe:",
         "FIELD_HEADER_HOSTNAME"        : "Hostname:",
         "FIELD_HEADER_IGNORE_CERT"     : "Server Zertifikat ignorieren:",