* system/fluents.py: Fixed a bug where the the application tried to load

a toolbar from None

 * system/plots.py: Fixed MainView.insert_view that was a no-op when in large
   view.

 * system/dataset.py: Changed __str__ of dataset to also show names of dimensions.

system/plots.py

@@ -207,7 +207,10 @@ class MainView (gtk.Notebook):
         self.set_current_page(0)
 
     def insert_view(self, view):
-        vf = self.get_active_small_view()
+        if self.get_current_page() == 0:
+            vf = self.get_active_small_view()
+        else:
+            vf = self._large_view
         vf.set_view(view)
         
     def show(self):