Haketilo

[UNTESTED- will test] Add filtering for http-equiv CSP headers

Rationalize CSP violation report blocking.

Report blocking now applies iff scripts are blocked.

code maintenance

Squash more CSP-filtering bugs

On Firefox, original CSP headers are now smuggled (signed) in an x-orig-csp
header to prevent re-processing issues with caching. Additionally, a default
header is added for non-whitelisted domains in case there are no existing...

Fix some bugs in the refined CSP handling

[UNTESTED- will test] Use more nuanced CSP filtering

CSP headers are now parsed and processed, rather than treated as simple
units. This allows us to ensure policies delivered as HTTP headers do not
interfere with our script filtering, as well as to preserve useful protections...

Remove unnecessary imports of url_item and add a CSP header-parsing function

The parsing function isn't used yet; however, it will eventually be as a less
destructive alternative to handling headers as indivisible units.

Merge rebranding to "Hachette"

fix page info server bugs

Merge commit 'ecb787046271de708b94da70240713e725299d86'