Federation problem is fixed

As you know, we were affected by the federation delay problem at 0.19. Lemmy developers made fixes for this, but they haven't released the new version yet.

I selected the commits with these fixes and ran that version on Lemy 2 days ago and the problem seems to have fixed according to Federation state tool.

Glad we finally got rid of a mud solution like restarting the server periodically :) Please contact me if you encounter any problems about this.