Normalize translation key for preferences categories

categories normalized:
 - Miscellanous
 - Player
 - Visual
 - Administrator
 - Data
 - Subscription

locales/nl.json

@@ -60,7 +60,7 @@
     "E-mail": "E-mailadres",
     "Google verification code": "Google-verificatiecode",
     "Preferences": "Instellingen",
-    "Player preferences": "Spelerinstellingen",
+    "preferences_category_player": "Spelerinstellingen",
     "preferences_video_loop_label": "Altijd herhalen: ",
     "preferences_autoplay_label": "Automatisch afspelen: ",
     "preferences_continue_label": "Standaard volgende video afspelen: ",
@@ -79,14 +79,14 @@
     "preferences_annotations_label": "Standaard annotaties tonen? ",
     "preferences_extend_desc_label": "Breid videobeschrijving automatisch uit: ",
     "preferences_vr_mode_label": "Interactieve 360-graden-video's ",
-    "Visual preferences": "Visuele instellingen",
+    "preferences_category_visual": "Visuele instellingen",
     "preferences_player_style_label": "Speler vormgeving ",
     "Dark mode: ": "Donkere modus: ",
     "preferences_dark_mode_label": "Thema: ",
     "dark": "donker",
     "light": "licht",
     "preferences_thin_mode_label": "Smalle modus: ",
-    "Subscription preferences": "Abonnementsinstellingen",
+    "preferences_category_subscription": "Abonnementsinstellingen",
     "preferences_annotations_subscribed_label": "Standaard annotaties tonen voor geabonneerde kanalen? ",
     "Redirect homepage to feed: ": "Startpagina omleiden naar feed: ",
     "preferences_max_results_label": "Aantal te tonen video's in feed: ",
@@ -104,7 +104,7 @@
     "Enable web notifications": "Systemmeldingen inschakelen",
     "`x` uploaded a video": "`x` heeft een video geüpload",
     "`x` is live": "`x` zendt nu live uit",
-    "Data preferences": "Gegevensinstellingen",
+    "preferences_category_data": "Gegevensinstellingen",
     "Clear watch history": "Kijkgeschiedenis wissen",
     "Import/export data": "Gegevens im-/exporteren",
     "Change password": "Wachtwoord wijzigen",
@@ -112,7 +112,7 @@
     "Manage tokens": "Toegangssleutels beheren",
     "Watch history": "Kijkgeschiedenis",
     "Delete account": "Account verwijderen",
-    "Administrator preferences": "Beheerdersinstellingen",
+    "preferences_category_admin": "Beheerdersinstellingen",
     "preferences_default_home_label": "Standaard startpagina: ",
     "preferences_feed_menu_label": "Feedmenu: ",
     "Top enabled: ": "Bovenkant inschakelen? ",