Correct txf output to use a minus sign, rather than parenthesis, for debits, without regard to locale settings, as is required by the txf pseudo-standard; was previously incorrectly using parenthesis for negatives in Windows environments, for example.
- New Chart of Accounts Assistant is too large for screen

Add scrolled window as the container of New Book Options. Especially to
Business and Counters tabs, there are too many options there. A vertical
scollbar will display automatically.
Updated Russian translation from Dmitry Pavlov
Align perl module requirements with recent Finance::Quote versions