WSTEAMA-1195 Improve image quality on home pages (and curations)

[LilyL0u]

Resolves JIRA [1195]

With useLargeImages also used on mobile breakpoints (before it was just on desktop), there is a clear improvement in image quality:

Overall changes

• Adds new 800px resolution for images used in curations from TIPO and therefore, on Home Pages
• Adapts media query breakpoints for Desktop to accommodate the new addition of 800px resolution images
• Adjusts mobile_size to prevent lower quality image being served from the image srcSet when viewed on mobile or responsive view

Code changes

• See files changed

Testing

1. List the steps used to test this PR.

Helpful Links

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[LilyL0u]

I have left a message on slack to check the number values I have put into this PR. I have guessed them based on just looking at the page, but we need the right numbers to go in for this to be finished.

I have left the commented out old values in the code so we can see what it was before. I can remove this once the numbers have been confirmed.