Add format helper for currency

app/views/finance/financial_links/show.html.haml

@@ -17,7 +17,7 @@
             = format_date item[:date]
         %td= item[:type]
         %td= item[:description]
-        %td.currency{:style => "color:#{item[:amount] < 0 ? 'red' : 'black'}; width:5em"}= number_to_currency(item[:amount])
+        %td.numeric{style: 'width:5em'}= format_currency item[:amount]
 
 %p
   = @financial_link.note

app/views/finance/financial_transactions/_transactions.html.haml

@@ -37,6 +37,6 @@
           %td= h t.financial_transaction_type.name
         %td= h t.note
         - FinancialTransactionClass.sorted.each do |c|
-          %td.currency{:style => "color:#{t.amount < 0 ? 'red' : 'black'}; width:5em"}
+          %td.numeric{style: 'width:5em'}
             - if t.financial_transaction_type.financial_transaction_class == c
-              = number_to_currency(t.amount)
+              = format_currency t.amount

app/views/finance/index.html.haml

@@ -36,7 +36,7 @@
             %td= format_date(ft.created_on)
             %td= ft.ordergroup.name
             %td= ft.note
-            %td.numeric{:style => "color:#{ft.amount < 0 ? 'red' : 'black'}"}= number_to_currency(ft.amount)
+            %td.numeric= format_currency ft.amount
   .span6
     %h2
       = t('.open_transactions')

app/views/finance/ordergroups/_ordergroups.html.haml

@@ -17,8 +17,8 @@
         %td= ordergroup.contact
         - FinancialTransactionClass.sorted.each do |c|
           - amount = ordergroup["sum_of_class_#{c.id}"]
-          %td.numeric{:style => "color:#{amount < 0 ? 'red' : 'black'}"}
-            = number_to_currency amount
+          %td.numeric
+            = format_currency amount
         %td
           = link_to t('.new_transaction'), new_finance_ordergroup_transaction_path(ordergroup), class: 'btn btn-mini'
           = link_to t('.account_statement'), finance_ordergroup_transactions_path(ordergroup), class: 'btn btn-mini'