Dan Albert f727712bfa Make non-interactive map elements unobstructive.
This makes most of the lines and polygons on the map non-interactive so
they don't capture mouse events, and also makes the culling exclusion
zones unfilled so they don't obscure real map objects in dense areas.

Fixes https://github.com/dcs-liberation/dcs_liberation/issues/1217
2021-06-16 17:22:07 -07:00
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