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/en.json

@@ -346,7 +346,8 @@
       "changeApp": "Change app",
       "selectPlatform": "Select platform",
       "app": "app",
-      "apps": "apps"
+      "apps": "apps",
+      "tutorial": "Tutorial"
     },
     "myDevices": "My Devices",
     "noDevices": "No connected devices",