Live Wallpaper, offline

The Live Wallpaper (in the navigation console) has been improved. Several bugs were fixed (like the one for the daylight), and you can now use it offline, like when no NMEA data are coming. This can be useful when you are not on the boat (like at home).

You can give a default position (in the preferences), and it will be used when no GPS Data is available.
New features:

• The tilt is based on the Sun declination
• You can have Moonlight and Sunlight
• The tide curve of the closest station is displayed (closest in a radius of 100 nautical miles)
• Sun and Moon positions are displayed (when the body is visible)

Code and (some) doc are available on GitHub.