Add scrollbar to mission summary list

Mission items now show summary

Plus lots of other cleanup

Add Mission Items to Fly View

Separated Flight map into View and Widget

initial travis-ci

All MavManager functionality now in Vehicle

- Moved all MavManager functionality to Vehicle
- Updated all code to use Vehicle instead of MavManager
- Removed MavManager

Switch to Development 2.8

Restructuring flight map code

Add vehicle indicator to flight display

fix global position display in UAS widget

Signed-off-by: kai <kai@uav-flightresearch.com>

UASManager -> HomePositionManager

Revert "set QGC version from git"

New MultiVehicleManager, Vehicle objects

set QGC version from git

QGC bugfixes 

- MultiVehicleManager is a Qml friendly replacement for UASManager
- Vehicle is a replacement for both UAS and AutoPilotPlugin