hpDec fix + Save quest expiration

Fixed an issue that would let a player to delay or anticipate the next
map hpDec proc in certain conditions. Implemented mechanic that enables
the DB save of expiration times for quests that needs this.

src/client/MapleQuestStatus.java

@@ -63,7 +63,7 @@ public class MapleQuestStatus {
     private Map<Integer, String> progress = new LinkedHashMap<Integer, String>();
     private List<Integer> medalProgress = new LinkedList<Integer>();
     private int npc;
-    private long completionTime;
+    private long completionTime, expirationTime;
     private int forfeited = 0;
     private String customData;
 
@@ -71,6 +71,7 @@ public class MapleQuestStatus {
         this.questID = quest.getId();
         this.setStatus(status);
         this.completionTime = System.currentTimeMillis();
+        this.expirationTime = 0;
         if (status == Status.STARTED) 
             registerMobs();      
     }
@@ -80,6 +81,7 @@ public class MapleQuestStatus {
         this.setStatus(status);
         this.setNpc(npc);
         this.completionTime = System.currentTimeMillis();
+        this.expirationTime = 0;
         if (status == Status.STARTED) {
             registerMobs();
         }
@@ -89,9 +91,9 @@ public class MapleQuestStatus {
         return MapleQuest.getInstance(questID);
     }
 	
-	public short getQuestID() {
-		return questID;
-	}
+    public short getQuestID() {
+        return questID;
+    }
 
     public Status getStatus() {
         return status;
@@ -178,6 +180,14 @@ public class MapleQuestStatus {
     public void setCompletionTime(long completionTime) {
         this.completionTime = completionTime;
     }
+    
+    public long getExpirationTime() {
+        return expirationTime;
+    }
+    
+    public void setExpirationTime(long expirationTime) {
+        this.expirationTime = expirationTime;
+    }
 
     public int getForfeited() {
         return forfeited;