solidify rim material option, use the next material slot for rim faces.

a bit arbitrary but with most cases where solidify is used in durian we get UV texture stretching since there is no way to access the newly created size faces this gives us a way to switch out the material on the rim.

release/scripts/ui/properties_data_modifier.py

@@ -643,13 +643,14 @@ class DATA_PT_modifiers(DataButtonsPanel):
         colsub.active = (md.vertex_group is not "")
         colsub.prop(md, "invert", text="Invert")
 
-        if wide_ui:
-            col.label(text="")
-
-        col.prop(md, "use_rim")
         col.prop(md, "use_even_offset")
         col.prop(md, "use_quality_normals")
 
+        col.prop(md, "use_rim")
+        colsub = col.column()
+        colsub.active = md.use_rim
+        colsub.prop(md, "use_rim_material")
+
         # col = layout.column()
         # col.label(text="Vertex Group:")
         # col.prop_object(md, "vertex_group", ob, "vertex_groups", text="")