use a "Leerseite" at the end of an exam iff it's a back side
use a "Leerseite" at the end of an exam iff it's a back side

Rationale: We do have a blank page ("Leerseite", intentionally blank
page) just after the front page. Most students do not use the blank
pages at all, few need just one. So lets "create" a "Leerseite" at
the end only if there is a blank page anyway (since it is a back side).

cagix/pandoc-lecture