Missing alt descriptions for slide images

[youngbrioche]

In order to make the site accessible for everyone the slide images should have descriptive alt texts.

[joyheron]

For slides with a lot of content, image transcripts may be a preferable method to alt texts

See https://seirdy.one/posts/2020/11/23/website-best-practices/#image-transcripts

[martinweck]

has been fixed by https://github.com/innoq/SCS/pull/63