Makes map vote and roundstart smart about player count. (#5418)

* Makes map vote and roundstart smart about player count.
No more Saltern with 30 players, or Knight Ship with 50.

* a typo

* Address reviews.

* Localized.

Content.Client/Entry/EntryPoint.cs

@@ -89,6 +89,7 @@ namespace Content.Client.Entry
             prototypes.RegisterIgnore("objective");
             prototypes.RegisterIgnore("holiday");
             prototypes.RegisterIgnore("aiFaction");
+            prototypes.RegisterIgnore("gameMap");
             prototypes.RegisterIgnore("behaviorSet");
             prototypes.RegisterIgnore("advertisementsPack");
             prototypes.RegisterIgnore("metabolizerType");