improve receipt/details reports and implement number formatting

1) eager load reports for receipt/details
2) introduce number_format lookups to replace print_settings for number formatting
3) implement NumberFormattable concern, reference number_format lookups or print_settings if not exist, to get number format settings and number formatting
4) replace rails NumberHelper.number_with_precision with NumberFormattable.number_format hopefully to reduce overhead, formatting numbers for huge lists of data

app/pdf/check_in_out_pdf.rb

@@ -1,5 +1,5 @@
 class CheckInOutPdf < Prawn::Document
-    include ActionView::Helpers::NumberHelper
+    include NumberFormattable
     attr_accessor :label_width,:price_column_width,:page_width, :page_height, :margin, :price_width, :item_width, :header_font_size, :item_font_size,:order_no_font_size, :item_height,:qty_width,:total_width,:item_description_width
     def initialize(print_settings,booking, table)
         self.page_width = print_settings.page_width