[TD] DrawUtil: remove unused includes

- also sort includes
- also move a definition to it
- also adapt two Gui files accordingly

src/Mod/TechDraw/Gui/TaskCenterLine.cpp

@@ -22,20 +22,9 @@
 
 #include "PreCompiled.h"
 
-#ifndef _PreComp_
-#include <cmath>
-#include <BRepBndLib.hxx>
-#include <Bnd_Box.hxx>
-#include <QButtonGroup>
-#include <QStatusBar>
-#include <QGraphicsScene>
-#endif // #ifndef _PreComp_
-
-
 #include <Base/Console.h>
 #include <Base/Tools.h>
 #include <Base/UnitsApi.h>
-
 #include <Gui/Application.h>
 #include <Gui/BitmapFactory.h>
 #include <Gui/Command.h>
@@ -45,21 +34,20 @@
 #include <Gui/Selection.h>
 #include <Gui/ViewProvider.h>
 #include <Gui/WaitCursor.h>
-
+#include <Mod/TechDraw/App/Cosmetic.h>
 #include <Mod/TechDraw/App/DrawPage.h>
 #include <Mod/TechDraw/App/DrawUtil.h>
 #include <Mod/TechDraw/App/DrawView.h>
 #include <Mod/TechDraw/App/DrawViewPart.h>
 #include <Mod/TechDraw/App/Geometry.h>
-#include <Mod/TechDraw/App/Cosmetic.h>
-
-#include <Mod/TechDraw/Gui/ui_TaskCenterLine.h>
+#include <Mod/TechDraw/App/LineGroup.h>
 
+#include "TaskCenterLine.h"
+#include "ui_TaskCenterLine.h"
 #include "PreferencesGui.h"
 #include "QGIView.h"
 #include "ViewProviderViewPart.h"
 
-#include "TaskCenterLine.h"
 
 using namespace Gui;
 using namespace TechDraw;