Replace png icons with svgs

[josefinalliende]

Context

There are still a few PNGs left in master that we should replace with SVGs. Here are the ones I currently see:

Solution 💡

We could replace all replaceable pngs with svgs

Steps 👣

• Remove any unused PNGs from this list
• For the ones still in use, check which can be replaced with SVGs
• Replace them with SVGs where possible
• Double-check that the affected screens still look good after the swap 😉