milis/talimatname/genel/i/icecat/vendor.js

// Use LANG environment variable to choose locale
pref("intl.locale.matchOS", true);

// Disable default browser checking.
pref("browser.shell.checkDefaultBrowser", false);

// Don't disable our bundled extensions in the application directory
pref("extensions.autoDisableScopes", 11);
pref("extensions.shownSelectionUI", true);