feat: achievement improvements

- Added achievement notification
- Show locked achievements
- Fixed quote padding
- Fixed date picker layout

Co-authored-by: David Ralph <me@davidcralph.co.uk>
Co-authored-by: Isaac <contact@eartharoid.me>

src/i18n/locales/achievements/en_GB.json

@@ -47,4 +47,4 @@
     "name": "System Overload",
     "description": "Installed 50 add-ons"
   }
-}
+}