Bump v2.1.0 * Add & update Weblate translations * Add third state for test connection results * Add Dark Mode to the TopBar * Migrate to Bootstrap v5.3.x * Fix building of the JS docs * Fix processing DHCP lease time units * Fix navigation sections collapse * Replace Pylint & Pycodestyle for Ruff * Replace online Lato font with a local one * Refactor Notification API * Refactor Notifications component * Refactor update_reboot_settings function in updater.py * Update Foris JS library to v6.0.3 * Update FontAwesome library to v6.5.2 * Remove required attribute from new MAC address input * Other improvements * NPM audit fix