Console/MyLocationDisplay: Some renaming and description of NeptusProperties used.
Console/MyLocationDisplay: Renaming category of NeptusProperties used for derive heading.
Console/MyLocationDisplay: Renaming of NeptusProperties used for follow position of system.
Console/MyLocationDisplay: Little cleanup.
Announce: Adding temporary hack to get heading from the announce message (ACCU hack).
Console/MyLocationDisplay: Some cleanup on update method.
Console/MyLocationDisplay: Some cleanup text strings.
Console/MyLocationDisplay: Now can choose a system to get only the heading from.