feat: Load all replies on request
Created by: rachel
Summary
As a user I'd like to be able to load all replies to a post on request. This would likely be an option in the more-options dialog on a post, or optionally added to the set of buttons near the fav/boost/etc.
Purpose
Often on smaller instances many/most of the replies are not visible, making the conversation feel more empty than it really is. This makes it harder to find new people to follow, and can critically make reply-guy pile-ons even worse as people give redundant responses.
(P.S. I don't know AP super well, but I assume that the reason that all replies aren't loaded by default is that it would increase load beyond what would be reasonable)