Comment 12 for bug 1494544

Thanks Dan! I tested the branch and find that it works as you described in your comments. I have a couple of follow-up comments:

1.I think the warning message could be clearer for staff to describe the exact problem that might occur if they proceed with the void. mmorgan suggested in IRC that the warning be "Voiding these bills may produce a negative balance. Are you sure you wish to continue?" I prefer this wording.

2. If an account doesn't have the void permission, the void option is removed from the Full Details view of a bill, which is a good thing. However, there still isn't a corresponding "adjust" option there that will allow them to remove a portion of the overdue fine rather than the entire fine. Staff will miss having the ability to adjust just a portion of the fine.