Add new FactGroup support

Plumb through initial object mode on Vehicle

Track current mission item while flying

Flash auto-disconnect from vehicle

Fix line to home logic

Default acceptance radius to 0

Add missing mission commands for PX4 and ArduPilot stacks

It is also no longer a user visible field

Change from APM to ArduPilot naming

Fix DO_JUMP id handling

# Conflicts:
#	src/MissionManager/MissionManagerTest.cc

Fix conditions for showing Summary on lost vehicle

Mavlink update

Fix mission command overrides for offline edit

Planned home position support

Also additional major Mission usability changes

Plan: Altitude display should not show non-spatial items

ArduPilot takeoff mission command does not specify coordinate

Mission Command editor override

- override by vehicle type
- override by firmware type