Implement public suffix list to filter cookies
|Reported by:||pulkomandy||Owned by:||nobody|
It should not be possible to set a cookie on a public suffix (eg *.github.io, *.co.uk, ...). Currently we do not filter these out. This allows users to set cookies that affect other websites sharing the same suffix, allowing them tp spy on and track users.
Use of libnspsl or another public suffix library is possible to avoid rewriting all the logic ourselves.