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
* Fix#2027 - Accept own ID for remote follow with and without preceding @
Fix#2177 - Omit leading "acct:" in remote follow redirect template expansion
* Fix test
* Add coverage for create with empty acct value
* Add coverage for create with webfinger failure
* Add coverage for create with webfinger providing bad values
* Add coverage for create when webfinger is good
* Add coverage for session[:remote_follow] having data
* Simplify how remote follow pulls acct from session
* Remote follow behaves more like model
* Move the discovery portions of remote follow out of controller
* Check for suspended accounts
