v0.2-alpha.2

Second alpha version with some major functionality and new features:

• Data source layer added, program enities are persistent in database. First implementation works via SQLite. Now it is possible to work with several missions and vehicles, store and assign them
• New domain layer architecture and telemetry engine for flexible database integration in future
• Route editing improved, now will be no lag with hundred of waypoints. Waypoint actual and vertical profile views added
• Flight display polished, target params and navigation info can be displayed from MAVlink
• Video can both work from stream and device cameras
• Settings improved with new database and map functionality