SRI: don't complain about data URIs #493
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Resolves #455 (also created by me, a year or so ago)
In short,
<script src="data:...">is pretty much equivalent to an inline script, except that it can beasync,deferor ES module.This PR whitelists
dataURI scheme as trusted, as Observatory currently considers it a script with insecure scheme, giving significant penalties for it.The CI will fail, because it won't find Python 3.6, otherwise the tests should passed when I tried it.