wxGUI: add separator between new display and new workspace (cosmetics)

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@72388 15284696-431f-4ddb-bdfa-cd5b030d7da7

gui/wxpython/lmgr/toolbars.py

@@ -59,6 +59,7 @@ class LMWorkspaceToolbar(BaseToolbar):
         }
         return self._getToolbarData((('newdisplay', icons["newdisplay"],
                                       self.parent.OnNewDisplay),
+                                     (None, ),
                                      ('workspaceNew', icons["workspaceNew"],
                                       self.parent.OnWorkspaceNew),
                                      ('workspaceOpen', icons["workspaceOpen"],