Remove query params from stylesheet URLs when adding it to CSP #671
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Received a report that Mesop apps are having misconfigured CSP caused by stylesheet URLs.
I've removed query params because: 1) the query component is ignored (see error message below from Chrome) and 2) it can contain separator characters ";" and "," which was causing the CSP to break. As a follow-up, we can escape or raise an exception if any of the CSP inputs contains one of these separator characters.
This also addresses the issue in #549.