[Lighthouse Report] Cache expiration of assets is too low

[clawfire]

Current cache for assets (article pictures, js, css) is set for 7 days. Should be higher.

Cache-Control: max-age=31536000

https://developer.chrome.com/docs/lighthouse/performance/uses-long-cache-ttl/?utm_source=lighthouse&utm_medium=devtools

[clawfire]

Maybe @alrouen you can take a look on that someday ;)