Change ledger-next-amount to be case-sensitive
Change ledger-next-amount to be case-sensitive

Otherwise if there is an account that's name only has one part, the
regex can match it as a currency and as the beginning of an amount.
E.g. if we have the line "Expenses         45 USD", then the old
ledger-next-amount will jump to Expenses instead of to 45.

afh/ledger,jwakely/ledger,afh/ledger,ledger/ledger,paulbdavis/ledger,jwakely/ledger,jwakely/ledger,duncanmortimer/ledger,duncanmortimer/ledger,paulbdavis/ledger,jwakely/ledger,ledger/ledger,duncanmortimer/ledger,paulbdavis/ledger,jwakely/ledger,afh/ledger,ledger/ledger,jwakely/ledger,paulbdavis/ledger,duncanmortimer/ledger,duncanmortimer/ledger,ledger/ledger,paulbdavis/ledger,afh/ledger,paulbdavis/ledger,jwakely/ledger,afh/ledger,duncanmortimer/ledger,paulbdavis/ledger,duncanmortimer/ledger,ledger/ledger