Added totals to summary tables in service and supplier views

views/service.haml

@@ -25,12 +25,14 @@
   %table
     %tr
       %th.right Payments
+      %th.right Total £
       %th.right Max £
       %th.right Min £
       %th.right Average £
 
     %tr
       %td.right= @count
+      %td.right= sprintf("%0d", @total)
       %td.right= sprintf("%0d", @max)
       %td.right= sprintf("%0d", @min)
       %td.right= sprintf("%0d", @avg)            

views/supplier.haml

@@ -23,12 +23,14 @@
   %table
     %tr
       %th.right Payments
+      %th.right Total £
       %th.right Max £
       %th.right Min £
       %th.right Average £
 
     %tr
       %td.right= @count
+      %td.right= sprintf("%0d", @total)
       %td.right= sprintf("%0d", @max)
       %td.right= sprintf("%0d", @min)
       %td.right= sprintf("%0d", @avg)