Add new providers and smaller fixes
* 🐛 Fix wrong gnd URLs
* 🐛 Fix missing matching information after a new crawl (thanx @dodis)
* ✨ Include more data from eth zürich
* ✨ Include goesteli archive (thanx @k-r.ch)
* ✨ Add dump importer for part of viaf
* ✨ change widget order of elite-suisse (thanx @jean_ceppi)