Time in minutes is no longer scaled by day length.

Time in minutes now based on the existing date ticks * the day length,
plus the tick skip counter, instead of just the date ticks.
Change the format of the {DATE_WALLCLOCK_*} string params
to use date ticks scaled by the day length, as above.
Update status bar clock.

src/statusbar_gui.cpp

@@ -139,7 +139,7 @@ struct StatusBarWindow : Window {
 		switch (widget) {
 			case WID_S_LEFT:
 				/* Draw the date */
-				SetDParam(0, ((DateTicks)_date * DAY_TICKS) + _date_fract);
+				SetDParam(0, CURRENT_SCALED_TICKS);
 				DrawString(r.left + WD_FRAMERECT_LEFT, r.right - WD_FRAMERECT_RIGHT, r.top + WD_FRAMERECT_TOP, STR_WHITE_DATE_WALLCLOCK_LONG, TC_FROMSTRING, SA_HOR_CENTER);
 				break;