* Invalid acct is an error. not "2 errors".
* Empty input should be different error from invalid acct

* 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