There are edge cases where requests to certain hosts timeout when
using the vanilla HTTP.rb gem, which the goldfinger gem uses. Now
that we no longer need to support OStatus servers, webfinger logic
is so simple that there is no point encapsulating it in a gem, so
we can just use our own Request class. With that, we benefit from
more robust timeout code and IPv4/IPv6 resolution.
Fix#14091
Follow-up to #13452, fixing broken `uri.nil?` test.
Also remove the separate check for `uri` presence, as that would result
in a “Please review 2 errors below” while only one would be listed.
* Addition of update activity distribution by alias, minor correction
* Distribute Update activity after adding alias
* Add uniqueness verification to alias uri
* accept acct starting with @
* fix double-quoted to single-quoted
