Read posts don't turn grey until after refresh, and not at all when just viewing image/link.

[bynatejones]

** Jerboa Version ** Type the version from the settings here. 0.0.33

Describe the bug A clear and concise description of what the bug is.

After I "read" a post and to back to my feed, I expect the post title to be greyed out to show that I've just read that post. However, the title color doesn't change until after I scroll all the way back to the top of the feed and pull down to refresh.

Also, when only opening the image or website link for a post and not opening the post/comments itself, the post never appears as already read. I feel like that would be the expected outcome, since sometimes I don't feel like reading the comments but still want to know I've already viewed that post's content.

To Reproduce Steps to reproduce the behavior:

1. Read post.
2. Go back to feed.
3. Notice post still appears as if unread.
4. Refresh feed
5. Notice post now appears greyed out correctly.