[whatwg] Clarification of the relative priorities of network vs fallback namespaces for main vs sub resource loads.

[Michael Nordman]

In section  "6.6.6 Changes to the networking model" which applies to
sub resource loads, step 3 prevents returning fallback resources for
requested urls that fall into a network namespace.

In section "6.5.1 Navigating across documents" which applies to main
resource loads, step 17 does not explicitly exclude returning
fallbacks for such urls.

I doubt this difference is intentional, looks like step 17 needs some
<additional words>...

"If the resource was not fetched from an application cache, and was to
be fetched using HTTP GET or equivalent, and its URL matches the
fallback namespace <but not the network namespace> of one or more
relevant application caches..."