Fix for dropping posts/notifs in WS when mix task is executed

- start oban in mix tasks with empty queues, plugins and crontab
- fix for update_users_following_followers_counts
- fix for removed logo.png
- typo in resend confirmation emails mix task docs
- fix for uploads mix task (start Majic.Pool)
- fix for creating user mix task (start :fast_html app)

test/pleroma/workers/cron/new_users_digest_worker_test.exs

@@ -28,7 +28,7 @@ defmodule Pleroma.Workers.Cron.NewUsersDigestWorkerTest do
     assert email.html_body =~ user.nickname
     assert email.html_body =~ user2.nickname
     assert email.html_body =~ "cofe"
-    assert email.html_body =~ "#{Pleroma.Web.Endpoint.url()}/static/logo.png"
+    assert email.html_body =~ "#{Pleroma.Web.Endpoint.url()}/static/logo.svg"
   end
 
   test "it doesn't fail when admin has no email" do