Created a new font file with icons for nakamochi.
Renamed font file to use generic filename that only includes size
information so that the code does not have to be changed if the
font is replaced with another font style.
Note: this font is not yet production ready, need to create a
test view in ngui to render and compare all icons side by side.
10min looks quite excessive but based on conversations in
https://github.com/bitcoin/bitcoin/commit/7fb7acfc, better safe than
sorry. same for lnd. in any case, 30sec was indeed far too short to
begin with, especially for bitcoind.
services are now stopped in parallel, though. so, the poweroff sequence
goes faster.
16px looks easier to read but IPv6 addresses don't fit in the wifi
settings panel anymore. need to find a better way how to display them or
change font.