[TD]Refactor LTNP correction code for Dimensions

- additional geometry types

- add method to handle line like bsplines

- handle deleted ref body feature

- add test for empty savedGeometry

- add switch for matcher/LTNP on/off

src/Mod/TechDraw/Gui/Command.cpp

@@ -24,7 +24,6 @@
 #include <QApplication>
 #include <QFileInfo>
 #include <QMessageBox>
-#include <sstream>
 #include <vector>
 #endif
 
@@ -75,7 +74,7 @@
 #include "TaskProjection.h"
 #include "TaskSectionView.h"
 #include "ViewProviderPage.h"
-#include "ViewProviderViewPart.h"
+#include "ViewProviderDrawingView.h"
 
 void execSimpleSection(Gui::Command* cmd);
 void execComplexSection(Gui::Command* cmd);

src/Mod/TechDraw/Gui/QGIViewDimension.cpp

@@ -630,10 +630,9 @@ void QGIViewDimension::updateView(bool update)
         updateDim();
     }
 
-    if (dim->goodReferenceGeometry()) {
+    if (dim->hasGoodReferences()) {
         m_refFlag->hide();
     } else {
-//        m_refFlag->setPos(datumLabel->pos());
         m_refFlag->centerAt(datumLabel->pos() + datumLabel->boundingRect().center());
         m_refFlag->show();
     }