i18n cleanups (affects #137)

app/views/home/index.html.haml

@@ -50,10 +50,10 @@
       %h3= t '.my_ordergroup.transactions.title'
       %table.table.table-striped
         %tr
-          %th= t '.my_ordergroup.transactions.when'
-          %th= t '.my_ordergroup.transactions.where'
-          %th= t '.my_ordergroup.transactions.note'
-          %th= t '.my_ordergroup.transactions.amount'
+          %th= heading_helper FinancialTransaction, :created_on
+          %th= heading_helper FinancialTransaction, :user
+          %th= heading_helper FinancialTransaction, :note
+          %th= heading_helper FinancialTransaction, :amount
         - for ft in current_user.ordergroup.financial_transactions.limit(5).order('created_on DESC')
           %tr
             %td= format_time(ft.created_on)

app/views/home/ordergroup.html.haml

@@ -7,10 +7,10 @@
       - unless @ordergroup.description.blank?
         %p= @ordergroup.description
       %p
-        %b= Ordergroup.human_attribute_name(:available_funds) + ':'
+        %b= heading_helper(Ordergroup, :available_funds) + ':'
         = number_to_currency(@ordergroup.get_available_funds())
       %p
-        %b= Ordergroup.human_attribute_name(:user_tokens) + ':'
+        %b= heading_helper(Ordergroup, :user_tokens) + ':'
         = @ordergroup.memberships.map{|m| show_user m.user}.join(', ')
       = link_to t('.invite'), new_invite_path(:id => @ordergroup), :remote => true, class: 'btn btn-primary'
   .span8