Fix Seven Cherubs quest slot affected by Update Converter bug

Closes: https://github.com/arianne/stendhal/issues/695

doc/CHANGES.txt

@@ -10,6 +10,9 @@ Changelog
 *web client*
 - fixed text extending past edge of notification bubbles
 
+*server fixes*
+- fixed Seven Cherubs not showing up as completed
+
 
 1.46
 

src/games/stendhal/server/entity/player/UpdateConverter.java

@@ -655,6 +655,13 @@ public abstract class UpdateConverter {
 				}
 			}
 		}
+
+		// 1.47: an issue in update converter caused leading ";" to be trimmed
+		questSlot = "seven_cherubs";
+		String slotState = player.getQuest(questSlot);
+		if (player.hasQuest(questSlot) && !slotState.startsWith(";")) {
+			player.setQuest(questSlot, ";" + slotState);
+		}
 	}