'Unknown' and 'None' in Submission Review Form

[taterhead247]

I opened up a submission review in the Admin portal to see what changed.

1. In the example below, you can see Aliases was None and is None. Can we make it not show up in the Change column if it didn't change?
2. For Tags under Change column, it's a bunch of Unknowns. Can it be fixed to show the actual tag name?