Modifiers: Laplacian Deform modifier add invert vgroup option

Adds the invert vgroup option to the Laplacian Deform modifier.

Differential Revision: https://developer.blender.org/D6843

release/scripts/startup/bl_ui/properties_data_modifier.py

@@ -497,6 +497,7 @@ class DATA_PT_modifiers(ModifierButtonsPanel, Panel):
         row = layout.row()
         row.enabled = not is_bind
         row.prop_search(md, "vertex_group", ob, "vertex_groups", text="")
+        row.prop(md, "invert_vertex_group", text="", icon='ARROW_LEFTRIGHT')
 
         layout.separator()