use max mon moves constant where able (#480)

* use max mon moves constant where able

* fix errors in script commands file

* fix more errors

include/battle.h

@@ -419,7 +419,7 @@ struct BattleStruct
     u8 wildVictorySong;
     u8 dynamicMoveType;
     u8 wrappedBy[MAX_BATTLERS_COUNT];
-    u16 assistPossibleMoves[PARTY_SIZE * 4]; // Each of mons can know max 4 moves.
+    u16 assistPossibleMoves[PARTY_SIZE * MAX_MON_MOVES]; // Each of mons can know max 4 moves.
     u8 focusPunchBattlerId;
     u8 battlerPreventingSwitchout;
     u8 moneyMultiplier;