Toolchain setting should be taken from configuration values

[Bastel Baus]

appObjects/FlatCAMGeometry.py: 2354 is

toolchange=True)

should be:

toolchange=self.app.defaults["geometry_toolchange"])

[Bastel Baus]

See PULL request: https://bitbucket.org/jpcgt/flatcam/pull-requests/350

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