* [Companion] Radio -> General Settings -> Hardware: Hide external serial port option for Horus; Fix battery voltage and current calibration changes not registering (wrong signal handler name); Prevent modified() event if edited value wasn't actually changed (this is a problem in all panels with onEditingFinished() signals); Fix some cosmetic layout issues when no hardware names are editable.
* [HardwarePanel] Minor layout fix for BT option.
* [HardwarePanel] Fix comparison issue.
