about 1300 files don't have correct markup for modern/ancient

[emylonas]

We have changed the way we markup whether an object is ancient or modern - at one point, we used

<summary>
  <note>xx</note>
</summary>

later we seem to have used

<summary>
  <rs>xxx</rs>
  <note>xx</note>
</summary>

and now we use

<summary>
  <rs>xx</rs>
</summary>

It's a painstaking process, but we should update older files so they have the correct markup. This is in place even if the inscription is ancient and has a blank <rs> element.