Reduced hand cards size. Removed battlefield card area gap (cards now have more place and are less reduced in size).

Mage.Client/src/main/java/mage/client/cards/BigCard.java

@@ -208,6 +208,9 @@ public class BigCard extends JComponent {
                         if (source == null) {
                             source = BufferedImageBuilder.bufferImage(bigImage);
                         }
+	                    if (source == null) {
+		                    return;
+	                    }
                         f = filter.filter(source, null);
                     }
                     synchronized (BigCard.class) {