[bug] Add font fallbacks to extension badge

[Derpius]

Describe the bug
While Windows has the Franklin Gothic font used by the VisTrace logo bundled in most cases, Mac/iOS/iPadOS and possibly other operating systems do not, causing it to fall back to Times New Roman

Expected behaviour
The font should fall back through a Verdana font stack.
Additionally a font stack for Verdana should be added to the EXTENSION text.

Screenshots

Additional context
https://www.cssfontstack.com/Franklin-Gothic-Medium
Verdana font stack: Verdana, "Verdana Ref", sans-serif;

[Derpius]

Fixed in f7fe458