PartDesign: make transform parameter dialogs use common base code with other dialogs

subj;
Make PasrtDesign::Transformed provide common for all features
classes interface getBaseObject() instead of specific getSupportObject ();
Refactor some TransformedParameters methods.

src/Mod/PartDesign/Gui/TaskScaledParameters.cpp

@@ -256,20 +256,10 @@ TaskDlgScaledParameters::TaskDlgScaledParameters(ViewProviderScaled *ScaledView)
 
 bool TaskDlgScaledParameters::accept()
 {
-    try {
-        //Gui::Command::openCommand("Scaled changed");
-        // Handle Originals
-        if (!TaskDlgTransformedParameters::accept())
-            return false;
 
         parameter->apply();
-    }
-    catch (const Base::Exception& e) {
-        QMessageBox::warning(parameter, tr("Input error"), QString::fromLatin1(e.what()));
-        return false;
-    }
 
-    return true;
+    return TaskDlgTransformedParameters::accept();
 }
 
 #include "moc_TaskScaledParameters.cpp"