Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

Signed-off-by: Patrick José Pereira <patrickelectric@gmail.com>

* Export should always be enabled since you can export default tile set
* Fix Select All/None problem

Previously the first activeChanged signal got lost because it was not connected yet to the LinkInterface which resulted in a link incorrectly shown as inactive.

Making sure the commands are sent to the camera's actual component ID rather than a hardcoded constant.

Also distinguish Emergency Stop better

This was too confusion to expose since QGC currently does not support ArduPilot terrain tile send.