Paragraphs and subsubsections were previously rendered as Yanone
Kaffeesatz ZeroHack, but with OT1 font encoding, which resulted in an
unknown font definition, so they got replaced with cmr.

Caption fonts according to https://stratum0.org/wiki/Datei:CI-fonts-specimen.pdf



Signed-off-by: Roland Hieber <rohieb@rohieb.name>