feat: Item validate cost, income and inventory account type.

feat: Style sales and purchases forms - 80% progress.
feat: Validate purchase-able and sell-able items in invoices and bills.
feat: Fix bugs in inventory FIFO/LIFO cost methods.

client/src/containers/Sales/Estimate/Estimates.js

@@ -33,6 +33,7 @@ function Estimates({
     requestFetchCustomers({}),
   );
 
+  // 
   const handleFormSubmit = useCallback(
     (payload) => {
       payload.redirect && history.push('/estimates');