Add personal dashboard flow and per-component website selection

This introduces a user-scoped dashboard with board-style view/edit pages while keeping it unavailable in team context, and moves website targeting to component config so dashboard components can each select their own website.

public/intl/messages/bn-BD.json

@@ -98,7 +98,6 @@
     "download": "ডাউনলোড",
     "dropoff": "ছেড়ে যাওয়া",
     "edit": "সম্পাদনা করুন",
-    "edit-dashboard": "ড্যাশবোর্ড সম্পাদনা করুন",
     "edit-member": "সদস্য সম্পাদনা করুন",
     "email": "ইমেইল",
     "enable-share-url": "শেয়ার ইউআরএল শেয়ার করুন",