Refine how taxon description texts are shown on species cards

[esko-piirainen]

As hobbyist trying to identify species, I want to easily see all the relevant information we have on the species in languages that I can understand

• Should we try to compose descriptions from multiple contexts? (ie Pinkkas)
• Should we show content in other languages than the user's selected language?
• There are contexts with almost the same text, and then there are contexts that have almost the same text, but with little differences
• It is a design flaw in Pinkka that same texts are replicated and have to be maintained separately: but the original idea that texts can be written for different audiences is solid (just the implementation is a bit lazy)

Example species
https://laji.fi/taxon/MX.39711/biology?context=LA.680

[mikkohei13]

Should be careful if showing content in non-selected or multiple languages. Bug causing this has lead to lot of confusion and error reports.

Also note related bug: luomus/laji#1009