Feat: allow request time for 'night'

src/main/java/com/sheepit/client/standalone/Worker.java

@@ -238,13 +238,25 @@ public class Worker {
 							config.getRequestTime().add(new Pair<Calendar, Calendar>(start, end));
 						}
 						else {
-							System.err.println(String.format("ERROR: The start (%s) time must be earlier than the finish (%s) time", times[0], times[1]));
+							// example: for a night render,  20:00,07:00 we will create 2 intervals for it:  20:00-23:59 and 00:00-07:00
+							try {
+								Calendar midnightBefore = Calendar.getInstance();
+								midnightBefore.setTime(timeFormat.parse("23:59"));
+								Calendar midnightAfter = Calendar.getInstance();
+								midnightAfter.setTime(timeFormat.parse("00:00"));
+								
+								config.getRequestTime().add(new Pair<Calendar, Calendar>(start, midnightBefore));
+								config.getRequestTime().add(new Pair<Calendar, Calendar>(midnightAfter, end));
+							}
+							catch (ParseException e) {
+								System.err.println("Failed to parse date");
 								System.exit(2);
 							}
 						}
 					}
 				}
 			}
+		}
 		
 		if (nb_cores < -1 || nb_cores == 0) { // -1 is the default
 			System.err.println("ERROR: The entered number of CPU cores (-cores parameter) is not valid. Please enter a number greater than zero");