Fix up _Bootscreen.h and _Statusscreen.h

- Support for 3 and 4-frame fan animation
- Binary bitmap data for easier visualization
- Cleanup mystery numbers, etc.

Marlin/ultralcd.cpp

@@ -4871,7 +4871,7 @@ bool lcd_blink() {
   millis_t ms = millis();
   if (ELAPSED(ms, next_blink_ms)) {
     blink ^= 0xFF;
-    next_blink_ms = ms + 1000 - LCD_UPDATE_INTERVAL / 2;
+    next_blink_ms = ms + 1000 - (LCD_UPDATE_INTERVAL) / 2;
   }
   return blink != 0;
 }