Improve image loading

[Feeshay]

Right now images load bit by bit and can move components around the page as they load. We want to show that there are images loading without moving everything around (loader, blurring, etc.).

Only render on load: https://stackoverflow.com/questions/54095980/how-to-preload-image-in-a-react-js-component Detect image loading: https://www.javascriptstuff.com/detect-image-load/ Progressive image loading: https://codeburst.io/how-to-do-simple-progressive-image-loading-in-react-like-medium-dfad4c181b53