Fees Command Bug

[Meg1456]

Viewfees Command
When you add a new person to the address book, the fees is initialised to 0 (which is good), but date is also initialised to 0 (doesn't make sense logically. Possible to initialise to current date instead?)

Listdue Command
The new person added to address book is automatically put under this function even though I didn't edit their fees yet (i.e. fee is shown to be 0, but they are still under due list).

[micklwl]

1. Negative fees value when editfees command should error message that it needs to be 2dp.
2. listdue command crashes the app.
   Steps to replicate: Add a fee, then do the listdue command.