OSIS export invalid because of italics

[skreutzer]

Previously, it wasn't recognized that bold/italics don't get parsed correctly, but as italics get outputted to OSIS now, the result doesn't validate any longer. The main problem seems to be nested bold and italic markup, experienced in Ruth 1 for instance.

[schierlm]

Looks fixed for me (and bold also gets output to export formats). Can you please verify?

[schierlm]

Indeed not fixed (noticed when trying to build EPUBs with your converter... took a while to find the stacktrace in the vast output of license headers...)

The problem seems to be that <hi> tags as well as <divineName>, <foreign> and <q> tags get produced inside <a> tags inside <note> tags. And OSIS does not like that kind of formatting inside footnote hyperlinks.

I for now fixed the resulting XML manually (see studienfassung-osis.patch.txt)