iOS: Some small images are being enlarged by NewsBlur

[samuelclay]

See https://forum.newsblur.com/t/ios-app-wordpress-feed-interaction-makes-images-huge/8627.

The web shows:

iOS shows:

Now it's true that the web doesn't have full bleed images, but iOS could use some logic to not blow up any image under a certain size (and 1em sized images would be included in that).