Admin panel for versioned activity logs, external identifiers and dynamic models

[philayres]

When a DM, AL or EI is "versioned" the admin definition should show the version of the referenced libraries being used in the "libraries" drop down panel.

For this to be useful, the "versions" panel for all resources needs to be correctly numbered in the "Version Change" title. This should match the id of the version of the diff (the newer id).

For example, we are seeing this right now:

Version Change 1 Unknown → Unknown
Attribute	Previous Version	Current Version
Id	372	421

Really we want

Version Change 421 Unknown → Unknown
Attribute	Previous Version	Current Version
Id	372	421

Also, the Unknown → Unknown is obviously incorrect. Fix it or remove it