We want other pieces of country information (in particular the short
names). This cleans up a lot of code anyway.
As an added bonus, this now catches squadrons that used invalid names
which would previously be passed through to pydcs and... then I don't
know what would happen.
The UI needs to be able to identify these to the server and vice versa,
so they'll need IDs that don't change. Rather than constructing an ID
based on the control points names, make them an owned part of the
control point. The constructed ID would be fine, but a UUID will make
them more suitable for the database, and this was always fairly gross
anyway.
Some follow up work if anyone is interested: a bunch of the data that's
computed in the various properties can now probably be computed *once*
and persisted to the FrontLine type.
CPU load seems to scale with route length, so add an option to limit
the length of the convoy route. The tradeoff is that the performance
sensitive route won't necessarily be a correct route.
