* Update badge background for selected pagemenu item
This brings the background color in line with the user notification number badge background in the upper right corner.
The previous background was too bright for mono.css to properly read the white menu item text.
* CSS cache busting
Change last two digits to 42, because reasons.
Fixes issue where the librenms_logo_mono.svg is now loaded by making the background black to match the logo.
Update twofactor.lib.php.
Remove unused if statement