Move "Show Images" and "Show Avatars" back into Settings screen.

Seemed convenient while I was testing their effects before loading a posts
view, so it's probably convenient for others before loading a posts view.
Fix crash scraping profile after losing the login session.

If someone changes their password, the initial profile scrape will fail. This
happens just in time to crash before Awful notices and shows the login screen,
so we need to not crash if a profile can't be scraped.
Bump version to 2.0.7.