barchart: use budgets.calculate_children
barchart: use budgets.calculate_children

yagebu/fava,aumayr/beancount-web,beancount/fava,beancount/fava,aumayr/beancount-web,yagebu/fava,aumayr/beancount-web,yagebu/fava,yagebu/fava,beancount/fava,beancount/fava,yagebu/fava,aumayr/beancount-web,beancount/fava