fix i18n typos

app/helpers/application_helper.rb

@@ -143,7 +143,7 @@ module ApplicationHelper
   # checks for nil (useful for relations)
   def link_to_user_message_if_valid(user)
     user.nil? ? '??' : link_to(user.nick, new_message_path('message[mail_to]' => user.id),
-                               :title => I18n.t('write_message'))
+                               :title => I18n.t('helpers.application.write_message'))
   end
 
   def bootstrap_flash

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

@@ -7,7 +7,7 @@
       %td= sort_link_helper t('.date'), "date"
       %td= t('.who')
       %td= sort_link_helper t('.note'), "note"
-      %td= sort_link_helper t('amount'), "amount"
+      %td= sort_link_helper t('.amount'), "amount"
   %tbody
     - @financial_transactions.each do |t|
       %tr