feat: connect RemnaWave baseTranslations and fix SVG icons

- Wire baseTranslations from RemnaWave config to connection page UI
  (copyLink, openApp, installApp, addSubscription, connectAndUse,
  tutorial, close) with locale fallback: current lang → en → ru → first
- Add tutorial button when baseSettings.isShowTutorialButton is enabled
- Fix SVG icon rendering on admin apps settings page with proper scaling
- Add colored circle backgrounds for block and app icons in admin panel
- Add tutorial translation key to all locale files

src/locales/ru.json

@@ -368,7 +368,8 @@
       "changeApp": "Сменить приложение",
       "selectPlatform": "Выберите платформу",
       "app": "приложение",
-      "apps": "приложений"
+      "apps": "приложений",
+      "tutorial": "Инструкция"
     },
     "myDevices": "Мои устройства",
     "noDevices": "Нет подключенных устройств",