make sure ledger.accounts.keys() are only real accounts
make sure ledger.accounts.keys() are only real accounts

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