Dan Albert e721a234e1 Clean up front line code.
The routes do not need be be recreated each time we create a
`FrontLine`. The front lines follow the convoy routes, which are static.
Add the convoy route data to the `ControlPoint` the way we do for
shipping lanes and have `FrontLine` load the data from there.
2021-05-08 16:46:02 -07:00
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2021-05-08 16:46:02 -07:00