Mission control shows all parts of the mission

[linuxgurugamer]

In the mission control, where you select the missions, all parts of the mission are visible before selecting the mission, and even after the mission is selected, all parts are shown when you select it.

I've seen other people talk about this one, so figured it wasn't a high priority. Would be nice to fix, if it is possible

[jrossignol]

Defer to 1.9.4

[jrossignol]

Need to also check the scenario in #416 (should be the same root issue).