Set currency_prefix also in violin plot

[futilm]

It appears that FairViolinPlot is missing the currency_prefix parameter.

pyfair/pyfair/report/base_report.py

Lines 236 to 255 in 31cff43

	def _get_distribution_icon(self, model, target):
	"""Create base64 icon string using FairDistributionCurve"""
	fdc = FairDistributionCurve(model, self._currency_prefix)
	fig, ax = fdc.generate_icon(model.get_name(), target)
	img_tag = self._fig_to_img_tag(fig)
	return img_tag
	def _get_exceedence_curves(self, model_or_models, currency_prefix):
	"""Create base64 image string using FairExceedenceCurves"""
	fec = FairExceedenceCurves(model_or_models, currency_prefix)
	fig, ax = fec.generate_image()
	img_tag = self._fig_to_img_tag(fig)
	return img_tag
	def _get_violins(self, metamodel):
	"""Create base64 image string using FairViolinPlot"""
	vplot = FairViolinPlot(metamodel)
	fig, ax = vplot.generate_image()
	img_tag = self._fig_to_img_tag(fig)
	return img_tag

So that when I do

report = pyfair.FairSimpleReport(report_items, currency_prefix='€')

I get euros in all the report sections except the violin plot:

Example picture: