Display import source data on documents (#6651)

* Display import source in Insights

* Ensure sourceMetadata is not returned on public requests

* Support createdByName

* Prefer display source name

shared/i18n/locales/en_US/translation.json

@@ -166,8 +166,9 @@
   "{{ userName }} deleted": "{{ userName }} deleted",
   "You archived": "You archived",
   "{{ userName }} archived": "{{ userName }} archived",
-  "You created": "You created",
   "{{ userName }} created": "{{ userName }} created",
+  "Imported": "Imported",
+  "You created": "You created",
   "You published": "You published",
   "{{ userName }} published": "{{ userName }} published",
   "You saved": "You saved",
@@ -561,6 +562,8 @@
   "Done editing": "Done editing",
   "Restore version": "Restore version",
   "No history yet": "No history yet",
+  "Source": "Source",
+  "Imported from {{ source }}": "Imported from {{ source }}",
   "Stats": "Stats",
   "{{ count }} minute read": "{{ count }} minute read",
   "{{ count }} minute read_plural": "{{ count }} minute read",