iFly EFB

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1. Added NMEA Output for our iFly Aviation Tablet via the hardwired RS232 COM Port.
2. Added NMEA Output via BlueTooth Adapters.
(Tested with Sena SD1000 Long Range Bluetooth Serial Adapter from Amazon for $99.)
3. Fixes to instability/crashes that were happening on Android.
4. Prevent Android Screen orientation flipping to upside down while mounted horizontally (e.g. knee).
5. Fixed Flight Briefing Image presentation.
6. A couple Map Sketch fixes, and other fixes.