LINK and DAI icons out of date, many newer icons missing

[jmynes]

They appear like this:

They should appear like this:
https://github.com/spothq/cryptocurrency-icons/blob/master/svg/color/dai.svg
https://github.com/spothq/cryptocurrency-icons/blob/master/svg/color/link.svg

[jmynes]

Many newer icons such as AAVE are missing entirely, too.