add 31c3 stuff
convenience
initial
some tweaks
minor
updates from the train
forgot to add
rewrite after test talk
reword beginning, logos
remove unneeded asset
remove other decks
updates
Revert "remove other decks"

This reverts commit de85ed8aa119a22e4ecc7b230c940155d4059f7b.
Merge pull request #34 from djs55/hannesm-stolen-slides

CCC slides (copied from @hannesm's branch)