Replace brand icons

[niccofyren]

Currently we are using https://tabler.io/icons, while figma sketches were using https://feathericons.com/. The later has deprecated brand icons, and the former doesn't really look that good 😉

Examples

I tend to agree with feather icons on that custom brand icons are probably best avoided if at all possible. They will always look strange for anyone familiar with the brand, and makes it even harder than normal to keep icon library up to date.

Suggestion

• Use https://simpleicons.org/ which is focused on brand icons, giving us a simple one color icon we can make work in any web page style