Font fun

Just pushed a version that fixes an annoying behavior I noticed after I finally got the browser to display emojis. I was using the Noto Emoji Font before, but when rendering the new posts, the first frame sometimes got stuck for up to 200ms even in the local build. On browser this was also visible. I now switched to the twitter emoji font, another option would be to use the openmoji font. all are free options, but noto performs slow compared to the other two. Not yet sure why, but happy that it again works smoothly. I tried many things to improve the behavior, one which stayed in: posts now scroll in as well as out, which makes for a bit more dynamic feeling in my opinion. Also added a random selection of the first avatar image that is shown and a sound thats played when liking. Overall, feature completeness is close :) Especially with the font, I think I learned some things to consider for the future, given that I did not think rendering an emoji would be an issue