[Reverse Eng] Gui: remove unused headers

- also enable precompiled headers
- also some sorting

src/Mod/ReverseEngineering/Gui/Poisson.cpp

@@ -20,29 +20,19 @@
  *                                                                         *
  ***************************************************************************/
 
-
 #include "PreCompiled.h"
-
 #ifndef _PreComp_
 # include <QMessageBox>
-# include <QTextStream>
 #endif
 
+#include <App/Document.h>
+#include <Gui/BitmapFactory.h>
+#include <Gui/Command.h>
+#include <Gui/WaitCursor.h>
+
 #include "ui_Poisson.h"
 #include "Poisson.h"
 
-#include <Gui/Application.h>
-#include <Gui/BitmapFactory.h>
-#include <Gui/Command.h>
-#include <Gui/Document.h>
-#include <Gui/Selection.h>
-#include <Gui/ViewProvider.h>
-#include <Gui/WaitCursor.h>
-
-#include <Base/Interpreter.h>
-#include <App/Application.h>
-#include <App/Document.h>
-
 
 using namespace ReenGui;