User languages stats sidebar overflows

[cblanken]

When a the user sets the browser font size to something larger than default (16px) the language stats sidebar can overflow. See examples below.

To Reproduce

1. Set browser font size greater than 16px ("Large" or "Very Large" on Chromium)
2. Go to https://tatoeba.org/en/users/for_language/deu

Chromium font size "Large"

Chromium font size "Very Large"

The effect is similar on other language stats pages.

• https://tatoeba.org/en/users/for_language/spa
• https://tatoeba.org/en/users/for_language/fra
  etc.

Additional information (if relevant)

• This seems similar to issue CSS Problem - Chrome List Page #3097 which also shows text overflow for non-default browser font sizes.
• The provided screenshots were taken on a Linux system running the Chromium Browser (Version 123.0.6312.58).