Added script to make two random AI trainers battle, tweaked battle messages when logged, fixed typos

Data/Scripts/011_Battle/005_AI/001_Battle_AI.rb

@@ -45,7 +45,7 @@ class Battle::AI
     @trainer = @trainers[(opposes) ? 1 : 0][trainer_index]
     # Find the AI battler for which the action is being chosen
     @user = @battlers[idxBattler]
-    @user.refresh_battler
+    @battlers.each { |b| b.refresh_battler if b }
   end
 
   # Choose an action.