mention SW-properties earlier

I moved the list to an earlier chapter (as on #141) but left it (with a
reference) also at the current place because it is needed there too so
show the complexity.

closes #141

Author: knarrff

paper.tex

@@ -102,6 +102,7 @@ \section{Introduction}
 We use the term central \emph{RSE unit} interchangeably with the term \emph{RSE hub} even though for large federated research organisations there might be a more complex arrangement such as a network of RSE hubs.
 
 \section{Motivation for central RSE units}
+\label{sec:motivation}
 \begin{quotation}
       \noindent \textit{Better Software, Better Research}\\(Mission statement of the UK Software Sustainability Institute)
 \end{quotation}
@@ -112,7 +113,7 @@ \section{Motivation for central RSE units}
 
 Research software is getting increasingly complex.
 This is partly because the scientific problems being tackled using software are getting bigger.
-However, the software is also expected to be reliable, secure and easy to use.
+However, the software is also expected to rate high on a multitude of quality metrics such as correctness, reproducibility, maintainability, extensibility, usability, portability, interoperability, security, performance, and scalability~\autocite[Chapter 16]{Schulmeyer2008}.
 Handling this increased complexity whilst ensuring timely delivery requires dedicated RSEs in central RSE units.
 
 \subsection{Pooling: a necessary ingredient}
@@ -264,7 +265,7 @@ \subsection{Module 2: Consultation Services}%
 \label{sec:consultation}
 
 With the majority of researchers being self-taught programmers~\autocite{Carver2013}, there is a huge demand for expertise on how to develop better research software.
-Here, “better” can refer to a number of quality metrics such as correctness, reproducibility, maintainability, extensibility, usability, portability, interoperability, performance or scalability~\autocite[Chapter 16]{Schulmeyer2008}.
+Here, “better” can refer to a number of quality metrics as already mentioned in Section~\ref{sec:motivation}: correctness, reproducibility, maintainability, extensibility, usability, portability, interoperability, security, performance, or scalability~\autocite[Chapter 16]{Schulmeyer2008}.
 
 In order to raise the quality standards for research that is based on research software, it is of great importance for research institutions to provide access to such expertise with a low barrier to entry.
 The hub is a natural place to provide this central service.