Language selection is a bit weird

The language selection drop-down doesn't work the way I think it should:
- the 3 columns are hard to read (maybe the user could choose their preferred languages in a separate settings panel to avoid overwhelming the user with choice)
- it seems that looking for a word in French (say "perle") actually looks for a French entry in the English Wiktionary article for "perle" (my `LANG` is `en_GB.UTF-8`)

Ideally the drop-down would show a limited number of languages, and searching would search in that language's dictionary, for that language's entry.

(For reference, even if the Wiktionary support isn't great, the ability to switch between https://en.wiktionary.org/wiki/perle#French and https://fr.wiktionary.org/wiki/perle#Fran%C3%A7ais in 2 clicks is one of the things that's useful about iOS Wikipedia app Wikipanion)