Haketilo

add ability to query page content from repo and display it in the popup

store repository URLs in settings

remove unused variables

[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...

Merge remote-tracking branch 'origin/koszko' into jahoti

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'

Refer to the extension consistently as "Hachette" and remove TODOS.org
from the copyright file