Changes in I18n (except personal_conference and personal_journal)

app/views/admin/sites/site_info.html.erb

@@ -96,7 +96,7 @@
                   <% if @site.default_image.file %>
                     <label class="checkbox">
                     <%= check_box_tag 'site[remove_default_image]' %>
-                    <%= t('delete') %>
+                    <%= t(:delete_) %>
                     </label>
                   <% end %>
                 </div>