close cashier pdf and receipt bill pdf changes for credit payment

db/migrate/20170622050926_create_customers.rb

@@ -2,7 +2,7 @@ class CreateCustomers < ActiveRecord::Migration[5.1]
   def change
    create_table :customers, :id => false do |t|
       t.string :customer_id, :limit => 16, :primary_key => true #custom foreign_key to prevent conflict during sync
-      t.string :name, :null => false
+      t.string :name, :null => false, :index => true
       t.string :company
       t.string :email
       t.string :contact_no, :unique => true
@@ -20,6 +20,6 @@ class CreateCustomers < ActiveRecord::Migration[5.1]
       t.json   :tax_profiles
       t.string :image_path
     end
-    add_index :customers, [:membership_id, :customer_type]
+    add_index :customers, [:name, :membership_id, :customer_type]
   end
 end