Stencila hub log-in using Google bombs on Safari

[fkmendes]

Safari won't let you log in to the hub with Google.

First, the Google button isn't blue:

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Then, if you still click the Google button, this happens:

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If you click "Sign in" at the top-left corner of the error page above, then you get yet another error page:

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(Running macOS Mojave, 10.14.4; Safari Version 12.1)

[sentry]

Sentry issue: HUB-18T

[nokome]

The error we are getting associated with this is Reverse for 'gas_login' not found. 'gas_login' is not a valid view function or pattern name.. This is related to the new Google Apps Script provider. But I have no idea why there is an attempt to use this to authenticate.