Information screen should only display units, terrain and movement types that can actually appear in the match

[cinnamon189]

If you call up the Information screen, you always get to see units, terrain types or movement types that are not on the map or not in the build list, respectively. I'm familiar with AW and AW2, but even I find this confusing, and I'm afraid it may put off many a new Commander Wars player.

Therefore I suggest that, in the Information screen, there be only units, terrain types and movement types that are actually on the map or in the build list of the current match, respectively.

Apologies if this should be too similar to issue #1863

[Robosturm]

Wiki pages are not match aware.
So filtering anything out that's not part of match isn't possible / adding is out of scope.