Haketilo

Revamp signatures and break header caching on FF

Signatures, instead of consisting of the secure salt followed by the unique
value generated from the URL, are now the unique value generated from the
policy value (which will follow them) succeeded by the URL....

Use URL-based policy smuggling

Increase the power of URL-based smuggling by making it (effectively)
compulsory in all cases and adapting a structure. While the details still need to be worked out, the
potential for future expansion is there.

Merge popup display

show some settings of the current page in the popup

Revamp default settings

Default settings are now provided in the same format as data exported from the
extension, incorporating them into the main program as part of the build
process. Also, modify their contents; the apparently non-functional FSF stuff
is gone, replaced with fixes for BandCamp, WorldCat, and SumOfUs.

fix whitelisting under Firefox

refactor 3 miscellaneous fnctionalities to a their single own file

emply an sh-based build system; make some changes to blocking

gather all copyright info in 'copyright' file

Fix storage initialization on Icecat 60

This patch fixes storage initialization on Gecko browsers by switching from
using a background page to using a list of scripts. It remains a mystery why
that should have any effect; the only hint is that browser.runtime.onInstalled...