Set sign lines even when the event is cancelled (Fixes #82)

Also get the sign line from the event instead of the sign when checking if it is an admin shop so you can actually change that via an event listener.

src/main/java/com/Acrobot/ChestShop/Listeners/Block/SignCreate.java

@@ -33,14 +33,14 @@ public class SignCreate implements Listener {
 
         PreShopCreationEvent preEvent = new PreShopCreationEvent(event.getPlayer(), (Sign) signBlock.getState(), line);
         ChestShop.callEvent(preEvent);
-
+        
-        if (preEvent.isCancelled()) {
-            return;
-        }
-
         for (byte i = 0; i < event.getLines().length; ++i) {
             event.setLine(i, preEvent.getSignLine(i));
         }
+        
+        if (preEvent.isCancelled()) {
+            return;
+        }
 
         ShopCreatedEvent postEvent = new ShopCreatedEvent(preEvent.getPlayer(), preEvent.getSign(), uBlock.findConnectedChest(preEvent.getSign()), preEvent.getSignLines());
         ChestShop.callEvent(postEvent);

src/main/java/com/Acrobot/ChestShop/Listeners/PostShopCreation/SignSticker.java

@@ -25,7 +25,7 @@ public class SignSticker implements Listener {
             return;
         }
 
-        if (ChestShopSign.isAdminShop(event.getSign().getLine(NAME_LINE))) {
+        if (ChestShopSign.isAdminShop(event.getSignLine(NAME_LINE))) {
             return;
         }