Added circle button to it path
Bug fixes

Royston Bug 1: No scroll bar when the number of debtors is more than
can be shown on screen.
Steps:
1. Add someone x 5
2. Scroll up and down

Note: There is a scroll bar if there are more receipts than can be
shown on screen

Royston Bug 2: App crashes when you add multiple debtors and then try
to remove them all.
Steps:
1. Add someone x 5
2. Delete them one at a time.
Observed Result:
Each person is deleted until the last one which after deleting will
reappear shortly before the app crashes.
Note: App will crash, and all “deleted” debtors will still be there.

Royston Bug 3: Add a debtor and click into them. Sleep the device. Wake
the device and the back arrow on the top left will be missing.