Update locale ids, Update my grade

locales/en/profile.json

@@ -14,7 +14,7 @@
     "contact": "Get in touch",
     "belongs": "Organization",
     "more": "More...",
-    "grade": "(1st grade)",
+    "grade": "B2",
     "icon_1": "Icon: ",
     "icon_2": ""
 }

locales/ja/profile.json

@@ -14,7 +14,7 @@
     "contact": "連絡先 / SNS",
     "belongs": "所属",
     "more": "さらに見る...",
-    "grade": "1年",
+    "grade": "2年",
     "icon_1": "アイコン: ",
     "icon_2": "さん"
 }