main: add thx slide

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>
main: disable aktuelles part

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>
Move anwendungen slides to meshrouter/vpn

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>
firmware: add first ideas

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>
einleitung: clean up

Signed-off-by: Tim Niemeyer <tim.niemeyer@mastersword.de>