Add creation time to list

Fallback to upload time for now.

Helps to have:

* core
:* I77303d8e535fc1c42e14cfb853814e5c434a81ec
* CommonsMetadata
:* I5e6bc45f9751641e16426231dabcc8277b86fee0

Change-Id: I822b48cebbace51cd8f68adc45a68a1c93ec29db
Merge "Add creation time to list"