Nicer/Simpler tables (#107)

* Make headrow in tables bold

* Simplify tables markup

- Markup is definitely simpler.
- Will not be built separately in a pdf anymore.
- Fixed some typo as well
- Relatively coherent look
- Can be better, some sizes are relatively arbitrary

* Remove horizontal separation inside tables

Not very nice if you ask me..

book/baking/baking.tex

@@ -21,7 +21,7 @@ extensible and can be stretched.
 
 \begin{table}[htp!]
     \begin{center}
-        \includegraphics{tables/table-baking-process-stages.pdf}
+        \input{tables/table-baking-process-stages.tex}
         \caption{The different stages that your dough undergoes during the baking process.}
     \end{center}
 \end{table}
@@ -267,12 +267,13 @@ crust color. In my case this is another 15-25 minutes typically.
 
 \section{Conclusions}
 
-\begin{figure}[!htb]
+\begin{table}[!htb]
     \begin{center}
-        \includegraphics{tables/table-oven-baking-overview.pdf}
-        \caption{An overview of different oven types and their different baking methods}
+        \input{tables/table-oven-baking-overview.tex}
+        \caption{An overview of different oven types and their different
+        baking methods.}
     \end{center}
-\end{figure}
+\end{table}
 
 Depending on your home oven, a different method
 of steaming may be used. Generally most ovens