Ignore Appendis section if no documents are given

style/template.tex

@@ -582,6 +582,7 @@ $body$
 % 2.) Tabellenverzeichnis
 % 3.) Literaturverzeichnis 
 
+$if(da-appendix)$
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 %  APPENDIX
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -619,7 +620,7 @@ $for(da-appendix)$
  ]{pdfs/$da-appendix.pdf-file$}
 %\includepdf[pages=$if(da-appendix.seiten)$$da-appendix.seiten$$else$-$endif$]{source/pdfs/$da-appendix.pdf-file$}
 $endfor$
-
+$endif$
 
 \end{document}