commits c/o ms mayo regarding validations

Updates on the following files:
CONTROLLERS
-CashFlowController
-MortalityController
-PettyCashController
-SalesController
CASHFLOW VIEW
-create
-edit
-list
-_form
MORTALITY VIEWS
-create
-edit
PETTY CASH VIEWS
-create
-edit
-list
-_form
SALES VIEWS
-create
-edit