[TD]properly initialize Unit Widgets in Prefs

src/Mod/TechDraw/Gui/DlgPrefsTechDraw1Imp.cpp

@@ -80,6 +80,9 @@ void DlgPrefsTechDraw1Imp::saveSettings()
 
 void DlgPrefsTechDraw1Imp::loadSettings()
 {
+    double labelDefault = 8.0;
+    plsb_LabelSize->setValue(labelDefault);
+
     pfc_DefTemp->onRestore();
     pfc_DefDir->onRestore();
     pfc_HatchFile->onRestore();

src/Mod/TechDraw/Gui/DlgPrefsTechDraw2Imp.cpp

@@ -74,6 +74,8 @@ void DlgPrefsTechDraw2Imp::saveSettings()
 
 void DlgPrefsTechDraw2Imp::loadSettings()
 {
+    double markDefault = 3.0;
+    pdsbTemplateMark->setValue(markDefault);
 
     pdsbToleranceScale->onRestore();
 

src/Mod/TechDraw/Gui/DlgPrefsTechDraw3Imp.cpp

@@ -81,6 +81,16 @@ void DlgPrefsTechDraw3Imp::saveSettings()
 
 void DlgPrefsTechDraw3Imp::loadSettings()
 {
+    //set defaults for Quantity widgets if property not found
+    //Quantity widgets do not use preset value since they are based on
+    //QAbstractSpinBox
+    double kinkDefault = 5.0;
+    pdsbBalloonKink->setValue(kinkDefault);
+    double arrowDefault = 5.0;
+    plsb_ArrowSize->setValue(arrowDefault);
+    double fontDefault = 4.0;
+    plsb_FontSize->setValue(fontDefault);
+
     cbAutoHoriz->onRestore();
     cbGlobalDecimals->onRestore();
     cbHiddenLineStyle->onRestore();