Exclude _headers and _redirects from the files cached by the Service Worker (fixes #987) (#988)
Exclude _headers and _redirects from the files cached by the Service Worker (fixes #987) (#988)

When the SW requests these files, the server answers with 404 because
they're not served. As a result the SW aborts the registration.
mstange/cleopatra,mstange/cleopatra,devtools-html/perf.html,devtools-html/perf.html