Correct formatting of year of discovery
The year of discovery was formatted as an amount, instead of a number, so instead of being displayed as, e.g., ‘1961’, it was being displayed as ‘1,961’, ‘1.961’ or ‘1 961’, depending on the locale. The old KUIT tag ‘<numid>’ was supposed to fix the formatting, but is no longer supported. The recommended fix is to use QString::number(), as documented in: https://api.kde.org/frameworks/ki18n/html/prg_guide.html#subs_notes The ‘<numid>’ tags have not be removed from the string, as that would break string freeze in the stable branch. I will remove them in a separate commit in ‘master’.