- add consts all over the place (in sources that is)
- add assertions all over the place
- add checking of return value in file operations and in other places
- gray out menu items and toolbar items when appropriate
- allow to use python interpreter interactively (at command prompt)
- i18n of amount output (do I have to write currency symbol?)

- add --geometry switch to command line parameters
- add 'accounts->delete branch' command
- drag&drop in accounts tree???