Fix TEI validation errors

[wrznr]

After consultation with @tboenig, it turns out that with a few modifications we can reach full compatibility with the DTABf, almost:

• collection information as textclass
• extent → biblFull
• licence target attribute
• editionStmt one level higher
• titlePage → div type="titlePage"

[bertsky]

• collection information as textclass

We should reserve the tei:profileDesc/tei:textClass mechanism for mods:subject and mods:classification, as implemented here.

The proper representation for mods:relatedItem/@type=series is not tei:creation, but tei:msDesc/tei:msIdentifier/tei:collection IMO, as implemented here.

• editionStmt one level higher

Fixed here

In addition to the above, when validating against TEI itself (xmlstarlet val -r tei_all.rng tei.xml), one can immediately see lots of invalidities caused by wrong order of elements. (For example, under tei:publicationStmt, we need publisher < date < pubPlace < idno < availability, whereas we do add_place < add_date < add_publisher < set_availability < add_identifier.)

[bertsky]

The proper representation for mods:relatedItem/@type=series is not tei:creation, but tei:msDesc/tei:msIdentifier/tei:collection IMO, as implemented here.

• editionStmt one level higher

Fixed here

Not a fix, because not in DTABf either, see discussion here. So let's move mods:relatedItem/@type=series into sourceDesc/biblFull/seriesStmt!