Hotfix OutOfBoundsException

src/de/steamwar/bungeecore/ArenaMode.java

@@ -88,4 +88,8 @@ public class ArenaMode {
     public String getChatName(){
         return chatNames.get(0);
     }
+
+    public boolean hasChatName(){
+        return !chatNames.isEmpty();
+    }
 }

src/de/steamwar/bungeecore/commands/FightCommand.java

@@ -50,6 +50,8 @@ public class FightCommand extends BasicCommand {
         TextComponent start = new TextComponent();
         TextComponent current = start;
         for(ArenaMode mode : ArenaMode.getAllModes()){
+            if(!mode.hasChatName())
+                continue;
             String command = precommand + mode.getChatName();
             current.setBold(true);
             current.setColor(ChatColor.GRAY);