drop invasive trace logging
bad format statement
don't test ssh

doesn't exist any more
Revert "strip fs20 test"

This reverts commit a2ce7cd778b8cf136991002dc2a8a91f037c9384.
more redundant timer code

because I didn't pay attention
less logging
remove fs20 stuff
Nested variables don't work any more

TODO test for them
import wago fix
add more log categories
* Annoying errors: errored off, out and/or away