Catch timeout errors when initially fetching rel=me links

[joelpurra]

Clicking the button to refresh the authentication methods (for using indieauth with openid authentication) shows the progress bar, but then it seems as if everything freezes. Waiting for several minutes does not help.

It seems as if the accessing and analyzing the remote url is being performed in the background, but progress isn't reported to the frontend. Accessing the indieauth authentication method selection page again displays the updated findings ("Updated 2 minutes ago").

[aaronpk]

It looks like this process is timing out and that is never communicated to the frontend. I'm going to rename this issue accordingly.

[joelpurra]

While the problem in this case was on my end (see #161), fixing the UI progress/status update issue might help others who have any kind of problem. I'll leave this issue open, for you to close as you see fit.