Upload form (web) is not able to handle non-Latin characters/accents

[MeilinaR]

When trying to upload a dataset whose authors/description contain any mention of a non-Latin character (in this case, it was Turkish for the divorce_predictors dataset found here) the following error occurs. This can be solved by replacing the characters for the time being, which are often found in either the description/author names.

[prabhant]

Seems like some turkish and estonian characters are not supported in basic_latin128
@joaquinvanschoren @janvanrijn

[joaquinvanschoren]

I discussed this with Jan. We think that the description field could be relaxed to allow UTF-8.
Could you look at that? It would require updating the data_upload XSD and thoroughly testing whether this works well.