Visualisation of false friends per language

[PanderMusubi]

I need a visualisation of false friends in the same way of
https://github.com/languagetool-org/languagetool/blob/master/languagetool-core/src/main/resources/org/languagetool/rules/false-friends.css
but show only the rulegroups in which a certain language is used.

The list of false friends is getting longer and longer so being able to filter on rulegroups only related to the language you are working on is practical.

Ideas for implementation are (one or more):

• parameter attached to the URL when viewing false-friends.xml in a web browser such as ?lang=all (default), ?lang=en, ?lang=de, etc.
• adding a HTML 1-of-n select that has the values all (default), en, de, nl, etc. on top of the view