Comment 2 for bug 1479107

Works for me, both for partially-paid bills and for negative balances that should be removed from the record. Signoff is available at

http://git.evergreen-ils.org/?p=working/Evergreen.git;a=shortlog;h=refs/heads/user/kmlussier/lp1479107_adjust_to_zero_interface

From my testing, it looks like this code also fulfills the functionality requested at https://bugs.launchpad.net/evergreen/+bug/1249398 .

Should we close that bug too?