Check and update static assets to use our CDN

[avdata99]

Check images, icons and other static resources and update them to use the revamped OKFN CDN
https://github.com/okfn/a

[lucpretti]

@avdata99 Is this still relevant for the current context?

[avdata99]

We didn't check all static files to ensure they are moved to the OKFN CDN @lucpretti
This is still relevant but is not urgent. We need to check this sometime.
Ensuring that if we change a logo in the main CDN automatically updates our website it's a good idea.