DroidPlanner: Fix problem with navigation menu
DroidPlanner: Extracting all mavlink methods to a new class.

It works.
Logging must be disabled to have a responsive HUD.
Connect Button is handled correctly on both Activitys
DroidPlanner: Callbacks for onConnect and onDisconnect of MAVlink.

Also adds comments to the MAVLink class.
DroidPlanner: Start of the waypoint manager class to get and set waypoints in the drone.

It is able to get the first waypoint for now.
DroidPlanner: Finished Waypoint manager for the mavlink protocol.
DroidPlanner: Using the waypoints manager to receive waypoint data from the APM board.

It works, just do'nt forget to connect.