Reformat 2col

[sjanssen2]

This PR is adding some missing plotting functions AND re-formats most figures to a two column layout as otherwise labels were too small to be read

[github-actions]

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[tensulin]

works, except for plot_heatmap, num_columns could be move to style.yaml

[sjanssen2]

@heatmaps: this was intentional, as I think having the colormap and the "ALL" environments help assessing the results. Having 2 instead of 4 columns might extend too much into the height - therefore I left as is
@num_columns: in principle yes, but atm manually setting the column number by plot type was quite handy