Various clean up (#134)

* Fix reference and grammar

* Remove obsolete package

* Use colored links in pdf, black when printed

We can debate the colors to use of course, I left the defaults in.
There are accessibility concerns with colors...

* Add supporter.csv to the list of TeX source

So we rebuild everytime we add a new supporter.

* Inline the list of supporters

Those guys are awesome, but do they really need to be in a table one per
line over 3 pages?

* Explicit figure location

h rarelly works, so making it clear top is also an option.

book/intro/acknowledgements.tex

@@ -15,20 +15,7 @@ bread at home.
 
 Thank you very much for your support!\\
 
-\begin{filecontents}{supporters.csv}
-  \end{filecontents}
+\textbf{Big shout-out to all the initial supporters who helped launching this
+project:\\}
 
-  {Big shout-out to all the initial supporters who helped launching this project:}
-
-  \pgfplotstableset{
-  begin table=\begin{longtable},
-  end table=\end{longtable},
-  }
-
-  \pgfplotstabletypeset[col sep=comma,
-  header=true,
-  columns={Name},
-  columns/Name/.style={column type=l,string type},
-  every head row/.style={before row=\toprule, after row=\midrule\endhead},
-  every last row/.style={after row=\bottomrule}
-  ]{supporters.csv}
+\input{supporters.csv}