Draft: Reduce number of strings with U2F/WebAuthn that are almost identical

These strings basically just differ with one word (U2F/WebAuthn). It's 22 strings. But could have been around 11 for translators if a placeholder was used so translators don't have to translations basically the same string more than once.

I don't know if it a good idea to use a placeholder but when a lot of these strings that are basically identical are in the translation is just adds more and more strings to a project that have more than 10000 strings to translate. So i think it would be good to work on reducing the number of strings to translate.

Authentication via U2F device failed.
Authentication via WebAuthn device failed.

Successfully deleted U2F device.
Successfully deleted WebAuthn device.

U2F Devices (%{length})
WebAuthn Devices (%{length})

U2F only works with HTTPS-enabled websites. Contact your administrator for more details.
WebAuthn only works with HTTPS-enabled websites. Contact your administrator for more details.

You don't have any U2F devices registered yet.
You don't have any WebAuthn devices registered yet.

Your U2F device did not send a valid JSON response.
Your WebAuthn device did not send a valid JSON response.

Your U2F device was registered!
Your WebAuthn device was registered!

The following string have a few more differences beyond U2F/WebAuthn.

Register Universal Two-Factor (U2F) Device
Register WebAuthn Device

Your browser doesn't support U2F. Please use Google Chrome desktop (version 41 or newer).
Your browser doesn't support WebAuthn. Please use a supported browser, e.g. Chrome (67+) or Firefox (60+).

Are you sure? This will invalidate your registered applications and U2F / WebAuthn devices.
Are you sure? This will invalidate your registered applications and U2F devices.

Not all browsers support U2F devices. Therefore, we require that you set up a two-factor authentication app first. That way you'll always be able to sign in - even when you're using an unsupported browser.
Not all browsers support WebAuthn. Therefore, we require that you set up a two-factor authentication app first. That way you'll always be able to sign in - even from an unsupported browser.