change credit payment query for dashboard and daily sales

app/controllers/home_controller.rb

@@ -126,8 +126,11 @@ class HomeController < ApplicationController
     if !employee_sales.nil?
       employee_sales.each do |emp|
         emp_data = []
-        emp_data.push([emp.e_name, emp.payment_amount])
-        @employee_sales.push({'name' => emp.payment_method, 'data' => emp_data})
+        if emp.payment_amount > 0
+          emp_data.push([emp.e_name, emp.payment_amount])
+
+          @employee_sales.push({'name' => emp.payment_method, 'data' => emp_data})
+        end
       end
     end
     @inventories    = StockJournal.inventory_balances(today,@from,@to,@from_time,@to_time).sum(:balance)