change webui action response to use referring url instead of server url for location header #28
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If the supervisor web ui is deployed at a subdirectory (instead of a virtual host), the user is redirected to the wrong url when an action response is received. The location header requires an absolute url, and the HTTP_HOST was being used to construct this url. Using referring url instead (after dropping the query part of the url) ensures that the user is redirected to the appropriate page.