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/history/sourdough-history.tex

@@ -4,7 +4,7 @@ sourdough breads has been excavated in Switzerland.
 However, based on recent research, some scientists speculate that sourdough
 bread had already been made in \num{12000}~BC in ancient Jordan~\cite{jordan+bread}.
 
-\begin{figure}[h]
+\begin{figure}[ht]
   \includegraphics[width=\textwidth]{einkorn-crumb}
   \caption{An ancient Einkorn flatbread. Note the dense crumb structure.}%
   \label{einkorn-crumb}
@@ -64,7 +64,7 @@ of the sourdough leavening agent. As the process is more expensive,
 bread rolls like these were ultimately consumed by the noble people
 in Vienna~\cite{vienna+breadrolls}.
 
-\begin{figure}[h]
+\begin{figure}[ht]
   \includegraphics[width=\textwidth]{sourdough-stove}
   \caption{A bread made over the stove without an oven.}%
   \label{sourdough-stove}