[TD] Balloon, move property LineVisible to View tab and fix a refresh bug.

src/Mod/TechDraw/App/DrawViewBalloon.cpp

@@ -113,8 +113,6 @@ DrawViewBalloon::DrawViewBalloon(void)
     ADD_PROPERTY_TYPE(KinkLength,(prefKinkLength()),"",(App::PropertyType)(App::Prop_None),
                                   "Distance from symbol to leader kink");
 
-    ADD_PROPERTY_TYPE(LineVisible,(true),"",(App::PropertyType)(App::Prop_None),"Balloon line visible or hidden");
-
     SourceView.setScope(App::LinkScope::Global);
     Rotation.setStatus(App::Property::Hidden,true);
     Caption.setStatus(App::Property::Hidden,true);

src/Mod/TechDraw/App/DrawViewBalloon.h

@@ -59,7 +59,6 @@ public:
     App::PropertyDistance        OriginY;
     App::PropertyFloat           TextWrapLen;
     App::PropertyDistance        KinkLength;
-    App::PropertyBool            LineVisible;
 
     short mustExecute() const override;