Cleanup and default to scale fit window

src/core/containers/image_list_scroll.py

@@ -42,7 +42,6 @@ class ImageListScroll(Gtk.ScrolledWindow):
         self.image_list_widget = ImageList()
         self.add(self.image_list_widget)
 
-    # TODO: Setup to load range start/end values from settings,
     # NOTE: Must align with ImageList start/end limits too
     def _update_list_size_constraints(self, size):
         self.size  = size
@@ -77,4 +76,4 @@ class ImageListScroll(Gtk.ScrolledWindow):
     def _unload_image(self, child):
         child.hide()
         # child.image.clear()
-        child.is_loaded = False
+        child.is_loaded = False