Firmware update

[arthurbenemann]

Add the possibility to flash the pixhawk via DroidPlanner. Two constrains that should help are:

• Pixhawk only
• direct USB connection only

[arthurbenemann]

At least now we are shoing the firmware that is loaded in the vehicle.

[arthurbenemann]

It looks like we are not going to do this as the tools required are compiled for Android, and by the time we have it implemented we will probably be switching uC.

[phmagic]

I propose we move this to a Preflight app built on top of 3DR Services

[Thalek]

I like that idea. Then if there are significant differences in say, UAVs and rovers, there'd be plenty of room to add the changes without bloating the main app.

[m4gr3d]

Moved to the preflight issue list: DroidPlanner/DP-Preflight#2