Fix warning on import

I started an import friday on develop and I got many many Warnings like the following:

WARNING in file at.at.s.9u.xml


<...isch135(Augsb.1616):[At]/einwoͤrtlinderKinde...>

<...isch135(Augsb.1616):[-]/einwoͤrtlinderKinde...>

It seems possibly all entries are affected, at least it is that much that I cant even open the email with all the warnings.

This merge-request seems to resolve the error, but the xstl script is involved, which is nearly a complete black-box to me. So I don't know if it would be really right to apply this change. Additionally I had to change one single JUnit test to make this work, which also makes me wonder if this change is right or not.

But without the change we have entries like this in the fwb-app (lemma: at):

On the current live system we have this:

This shows that in the citation the word itself is replaced by a - with the current xslt-script which seems not to be done on the current live instance