Address part of feedback

mapeditor/inspector/rewardswidget.h

@@ -1,6 +1,13 @@
-#ifndef REWARDSWIDGET_H
-#define REWARDSWIDGET_H
-
+/*
+ * rewardswidget.h, part of VCMI engine
+ *
+ * Authors: listed in file AUTHORS in main folder
+ *
+ * License: GNU General Public License v2.0 or later
+ * Full text of license available in license.txt file, in main folder
+ *
+ */
+#pragma once
 #include <QDialog>
 #include "../lib/mapObjects/CGPandoraBox.h"
 #include "../lib/mapping/CMap.h"
@@ -75,5 +82,3 @@ private:
 	CGPandoraBox & pandora;
 	const CMap & map;
 };
-
-#endif // REWARDSWIDGET_H