System settings
Properties:
- Units : metric/english/nautical
- Coordinate format : D:MM:SS.SS or D:MM.MMM
- Color Schema : day/night/auto
- Screen : enable/disable full screen and backlight
- Username : navigami user
- Password : navigami password
Commands:
- Save : save settings
- Uninstall : uninstall navigami and delete all stored data
- Info : info about used memory and storage space
- Back : back to settings menu