Institution names

[ctueck]

Currently, to add a new institution name one needs to copy the current one into a newly added previous name set and overwrite the current name. As a result, the new current name retains the ID of the old current name, while the old current name is now a former name with a new ID.

Logically, the current name set should retain its ID and be retired, and the new name should have a new ID. Also, source notes should be visible and editable, as they track the link to ETER/OrgReg records (CHAR-ID).

I suggest there should be a button to make the current name a former name, and thus create a new, empty current name.

[ctueck]

The same logic should also apply for agency name (sets).