add view section

doc/chapter/2architecture.tex

@@ -130,5 +130,5 @@ To be able to undo a step each stage needs to implement methods for both forward
     \label{fig:animated}
 \end{figure}
 
-\section{TODO: More Class Diagrams}\label{sec:classDiagrams}
-\TODO{maybe even into appendix}
+\section{View}\label{sec:view}
+\TODO{Kolja ausfragen}