Add a flowchart environnement and its listof (#188)

* Add a flowchart environnement and its listof

So we can more easily access those flowcharts from pdf and website,
rather than looking in the crowded list of figures.

* Update book/troubleshooting/misc.tex

* Temporarily remove list of flow charts from web version

* Update clean target to deal with listofcharts

* Silent KOMA warnings (#190)

No functional change, but less warnings will help to read the logs.
Good idea anyway to use the key/value scheme

Co-authored-by: Cedric <ced@awase.ostal>

* Fix front-page for one sided printing (#189)

As it is manually placed, is prone to break on evry change of the page
geometry...  This one looks good though in today's conditions.

Co-authored-by: Cedric <ced@awase.ostal>

* Enable micro-typographical improvements (#191)

Few people will notice but this actually brings loads of improvements to
line breaking, handing punctuations etc.

* Revert "Temporarily remove list of flow charts from web version"

This reverts commit 9611b250d2.

* Implement listofflowchart for tex4ht

as per michal suggestion:
https://github.com/michal-h21/tex4ebook/issues/114#issuecomment-1688543095

---------

Co-authored-by: Cedric <ced@awase.ostal>
Co-authored-by: Hendrik Kleinwaechter <hendrik.kleinwaechter@gmail.com>

book/non-wheat-sourdough/non-wheat-sourdough.tex

@@ -28,7 +28,7 @@ period, the bread can be baked. Due to the lack
 of gluten development, the final bread will feature a denser
 crumb compared to wheat.
 
-\begin{figure}[!htb]
+\begin{flowchart}[!htb]
 \begin{center}
   \input{figures/fig-non-wheat-process.tex}
   \caption[Process for non-wheat sourdough bread]{A visualization of the
@@ -37,7 +37,7 @@ crumb compared to wheat.
       ingredients are simply mixed together.}%
   \label{fig:non-wheat-sourdough}
 \end{center}
-\end{figure}
+\end{flowchart}
 
 This chapter will focus on making rye bread. The flour could
 be replaced with einkorn or emmer based on your preference.