Support Firefox Quantum v58+

[ghost]

Firefox Quantum now has U2F support built in. However it seems the current Ledger U2F transport is incompatible.

The browser test shows the following error on the Firefox web console:

Object { name: "TransportError", message: "Failed to sign with Ledger device: U2F BAD_REQUEST", stack: "TransportError@https://192.168.178.17:9966/index-browser.js:21822:16\nwrapU2FTransportError@https://192.168.178.17:9966/index-browser.js:21471:13\n_callee2$@https://192.168.178.17:9966/index-browser.js:21655:23\ntryCatch@https://192.168.178.17:9966/index-browser.js:14276:37\ninvoke@https://192.168.178.17:9966/index-browser.js:14510:22\ndefineIteratorMethods/</prototype[method]@https://192.168.178.17:9966/index-browser.js:14328:16\nstep@https://192.168.178.17:9966/index-browser.js:809:22\nstep/<@https://192.168.178.17:9966/index-browser.js:822:13\nrun@https://192.168.178.17:9966/index-browser.js:4980:22\nnotify/<@https://192.168.178.17:9966/index-browser.js:4993:30\nflush@https://192.168.178.17:9966/index-browser.js:4219:9\n", id: "U2F_2", originalError: Error }```

[gre]

So I can reproduce the problem and even the FIDO U2F app don't work with the official https://demo.yubico.com/u2f demo on FF (but works on Chrome). Not sure where the problem is.

[ghost]

Important to note for anyone wanting to try this is that U2F by default is disabled in Firefox. To enable it go to about:config and enable the setting security.webauth.u2f.

[syntaxval]

Just to add to this discussion, I managed today to get the OTHER_ERROR code on Firefox Quantum 58.0.2 today and TransportU2F.isSupported(), when resolved, returns true. I tried playing with AppID but still no success and I am not sure if that is due to my app running on subdomain. Perhaps worth investigating.