Add mode parameter, for transparent background to, LCD_ShowNum(...)
Change button text to have norrower left margin.
Fully working Sun and Moon dimmers using RTC time in main menu.
Remove sun_moon.h/c and bring code into main.c
Sun and Moon settings screen:
 * add +/- shift
 * display numeric values for settings
 * display graph and settings for object not being modified
 * add fast scroller to quickly simulate result of chosen settings
Change time screen alters dimmers on for new times.
Update sun/moon hardcoded values to something usable.