Replace font-awesome import

[linahanner]

The font awesome vector icons have been used for icons on the website but is imported through their website. This creates a dependency to their website and additional traffic during the loading process. Preferable would be for the icons to exist among our files.

They are available for free on their website https://fontawesome.com/

[karlbeecken]

Could be solved by this: https://fontawesome.com/how-to-use/on-the-web/setup/hosting-font-awesome-yourself
But would be pretty messy