message: fix(ui): disable Gateway label
  Issue
diff: <v-container cols="12" sm="6" class="ml-1">
  <v-switch
  - hint="Enable this to use Z2M only as Control Panel"
  + hint="Enable this to use zwavejs2mqtt only as Control Panel"
  persistent-hint
  - label="Disable Gateway"
  + label="Disable MQTT Gateway"
  v-model="mqtt.disabled"
  ></v-switch>
  </v-container>
  