Merge pull request #540 from shiena/update-locale-ja

Update japanese translation file

Assets/locale/ja.json

@@ -4,7 +4,7 @@
     "Delete Layer": "レイヤーを削除",
     "Duplicate Layer": "レイヤーを複製",
     "Order Layers": "レイヤーの順序",
-    "Merge Layers": "レイヤーをマージ",
+    "Merge Layers": "レイヤーを結合",
     "New Mask": "新規マスク",
     "Delete Mask": "マスクを削除",
     "Apply Mask": "マスクを適用",
@@ -133,12 +133,13 @@
     "Mask": "マスク",
     "Clear to Black": "黒へクリア",
     "Clear to White": "白へクリア",
+    "Invert": "反転",
     "Apply": "適用",
     "To Group": "グループへ",
     "Move Up": "上に移動",
     "Move Down": "下に移動",
-    "Merge Group": "グループをマージ",
-    "Merge Down": "下とマージ",
+    "Merge Group": "グループを結合",
+    "Merge Down": "下のレイヤーと結合",
     "Black Mask": "黒いマスク",
     "White Mask": "白いマスク",
     "Select Material": "マテリアルを選択",