Fix broken calculator function in FloatEdit widgets

grocery_transactions.py

@@ -21,7 +21,6 @@ from widgets import (
     ActivityManager,
     _set_focus_path,
 )
-from decimal import Decimal
 
 try:
     from db_credentials import HOST, PASSWORD

widgets.py

@@ -5,6 +5,7 @@
 #
 # THIS SOFTWARE IS PROVIDED AS IS WITHOUT WARRANTY
 import urwid
+from decimal import Decimal
 from urwid import numedit
 from collections import (
     OrderedDict,