Your profile folder contains a <a data-l10n-name="user-js-link">user.js file</a>, which includes preferences that were not created by { -brand-short-name }.
Notandamappan þín inniheldur <a data-l10n-name="user-js-link">user.js skrá</a>, sem inniheldur stillingar sem voru ekki búnar til af { -brand-short-name }.