Improve handling of duplicate language labels #1
Description
The labels/names Alice and Ruby each refer to two different languages:
Currently languages are processed in the order of Wikibase IDs, so that the lowest ID value keeps the Wikidata label and other languages with the same label, either use the Wikipedia slug or have the Wikibase ID added:
- https://programminglanguages.info/language/alice/
- https://programminglanguages.info/language/alice-q1335388/
- https://programminglanguages.info/language/ruby/
- https://programminglanguages.info/language/ruby-hardware-description-language/
The label itself should ideally remain unchanged, but the slug has to be unique. Also the Hello World example and the free books listing are derived from the label. So Ruby (hardware description language) shows the same code and listing as Ruby, which it shouldn't.