text in FileInfoWindow can be marked and copied,

code cleaning

QtMeshViewer/Header/FileInterface.h

@@ -1,17 +1,13 @@
 #pragma once
+#include <QObject>
+#include <QOpenGlTexture>
 #include <fstream>
 #include <QVector>
 #include <QVector2D>
-#include <QVector3D>
 #include <QMatrix4x4>
 #include <QQuaternion>
-#include <QOpenGLFunctions>
-#include <QOpenGlTexture>
-#include <QObject>
-#include <QOpenGLTexture>
 #include <QRegExp>
-#include <..\Header\MainWindow.h>
-
+#include "MainWindow.h"
 
 struct BoundingBox {
 	QQuaternion rotation;