network play: fix for Commander and Tiny Leaders variants

This method is called numerous times, many before the Commander data has
been populated on the PlayerView objects.  This is reflected a few lines
above where similar logic is applied to the current PlayerView.  This
simply applies similar logic to the player's opponents.

Signed-off-by: Jamin W. Collins <jamin.collins@gmail.com>

forge-game/src/main/java/forge/game/player/PlayerView.java

@@ -129,6 +129,12 @@ public class PlayerView extends GameEntityView {
         }
 
         final FCollectionView<PlayerView> opponents = getOpponents();
+        for (PlayerView opponent: opponents) {
+            if (opponent.getCommanders() == null) {
+                return Collections.emptyList();
+            }
+        }
+
         final List<String> info = Lists.newArrayListWithExpectedSize(opponents.size());
         info.add(TextUtil.concatWithSpace("Commanders:", Lang.joinHomogenous(commanders)));
         for (final PlayerView p : Iterables.concat(Collections.singleton(this), opponents)) {

forge-gui-desktop/src/main/java/forge/screens/home/VLobby.java

@@ -94,7 +94,7 @@ public class VLobby implements ILobbyView {
     private final VariantCheckBox vntArchenemy = new VariantCheckBox(GameType.Archenemy);
     private final VariantCheckBox vntArchenemyRumble = new VariantCheckBox(GameType.ArchenemyRumble);
     private final ImmutableList<VariantCheckBox> vntBoxes =
-            ImmutableList.of();
+            ImmutableList.of(vntCommander, vntTinyLeaders);
             // ImmutableList.of(vntVanguard, vntMomirBasic, vntCommander, vntTinyLeaders, vntPlanechase, vntArchenemy, vntArchenemyRumble);
 
     // Player frame elements