Add gotoFlightMode method

Only version check stable builds

FirmwarePlugin: Issue a warning upon connecting if the firmware in use is not using a stable release

Add Sentera cameras

The LinkIndicator shows the connected links and lets the user select the priority link,

Remove/comment off debug output pollution

Firmwareplugin: Trim retry period to something that matches closer the users attention and is still long enough to allow for multiple heartbeats to pass through

Just use settings defaults

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