use dedicated strings for sidebar localization (#2266)

src/i18n/locales/ja.json

@@ -829,20 +829,20 @@
     "page": {
         "sidebar": {
             "nowPlaying": "再生中",
-            "playlists": "$t(entity.playlist, {\"count\": 2})",
-            "search": "$t(common.search)",
-            "tracks": "$t(entity.track, {\"count\": 2})",
-            "albums": "$t(entity.album, {\"count\": 2})",
-            "genres": "$t(entity.genre, {\"count\": 2})",
-            "folders": "$t(entity.folder, {\"count\": 2})",
-            "settings": "$t(common.setting, {\"count\": 2})",
-            "home": "$t(common.home)",
-            "artists": "$t(entity.artist, {\"count\": 2})",
-            "albumArtists": "$t(entity.albumArtist, {\"count\": 2})",
+            "playlists": "プレイリスト",
+            "search": "検索",
+            "tracks": "トラック",
+            "albums": "アルバム",
+            "genres": "ジャンル",
+            "folders": "フォルダー",
+            "settings": "設定",
+            "home": "ホーム",
+            "artists": "アーティスト",
+            "albumArtists": "アルバムアーティスト",
             "myLibrary": "マイライブラリ",
-            "shared": "$t(entity.playlist, {\"count\": 2}) を共有",
-            "radio": "$t(entity.radioStation, {\"count\": 2})",
-            "favorites": "$t(entity.favorite, {\"count\": 2})",
+            "shared": "共有プレイリスト",
+            "radio": "ラジオ局",
+            "favorites": "お気に入り",
             "collections": "コレクション"
         },
         "fullscreenPlayer": {