JS: tree-table toggling; fix #336
JS: tree-table toggling; fix #336

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