charts: set selected currency; fix #734
charts: set selected currency; fix #734

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