some early SSH stuff -- might discard
Squashed 'revealjs/' content from commit 4068c52

git-subtree-dir: revealjs
git-subtree-split: 4068c5221d8550a78cd5ca8a9664b66f2cff1f54
Merge commit '2bea652cbbcc0c823b23daadeca9b6851a49dace' as 'revealjs'
crypto for openvpn access. security is provided by IP filtering.
drop revealjs, move openvpn stuff around
beginnings of the web interface