Merge branch 'feature/ci-slides-setup' into 'master'

Feature/ci slides setup

See merge request !145

(cherry picked from commit 7cb638ed)

e5f65618 remove public & slides
875f9013 [slides] add css file
fcd1b016 [slides] add properties slides
2101952f [slides] add index slide
9c1c581b [ci][pages] build reveal slides
620d9031 [slides] add readme
c6867922 [README] link slide pages
8a33c84a [slides][properties] further changes
aa280906 [TMP] run pages job on this branch