Dan Albert 1ee0aafd9a Unify TGO location selection.
We currently have three methods of choosing locations for TGOs:

1. From the campaign miz
2. From the per-CP mizdata files
3. Randomly

Move the selection among these sources into a single place and use it
everywhere that we search for a TGO location.

Longer term methods 2 and 3 will be removed.
2020-11-19 21:09:33 -08:00
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