web client: permission to control 'void' and 'adjust to zero' menu options

[Kathy Lussier]

In the xul client, a permission controlled whether staff had the ability to see the menu items to void a transaction or to adjust to zero in the bills interface. The reason for the permission check is because libraries that have enabled the "Prohibit Negative Balance" settings could continue to produce negative balances via a void action in the staff client. Conversely, libraries that allow negative balances may want to reduce the use of the 'adjust to zero' option.

A similar permission check is needed in the web client.

[Jason Etheridge (phasefx)]

Kathy, I think it would be good if we could implement a general infrastructure for having permissions control UI elements. Maybe a different bug to make this one dependent on?

[Kathy Lussier (klussier)]

Yes, I think that's fine. I just wanted to be sure to file this bug so that we didn't forget about it.

Another related bug that might depend on that infrastructure is bug 1697982.

[Michele Morgan (mmorgan)]

Confirmed this is still an issue in 3.7. Users without the VOID_BILLINGS permission still see the menu option when viewing a patron's bills.