Add survey results as paragraph to realizations.

[dokempf]

As discussed on Jan 18, this adds the survey results as a figure + small paragraph at the beginning of realization.

[knarrff]

I do approve the text, however please create a pdf instead of the png and use that, possibly with the route through an svg in matplotlib and inkscape --export-type=pdf FILE during build of the paper if the engine does not do so anyway. That then creates a vector-pdf instead of a matrix-png and as such smaller (in filesize) and yet nicer (sharper) figures.

[dokempf]

@knarrff Converted to PDF.