Add i18n for site_info.

Add always display site title.
Changes for menu in front-end

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

@@ -12,28 +12,29 @@
 				</li>
 			</ul>
 			<div class="tab-content">
+				<%= f.check_box :title_always_on %> <%= t 'admin.always_display_title' %>
 				<% @site_valid_locales.each do |locale|%>
 					<%= content_tag :div, :class	=> "tab-pane #{active_when_current_locale_eq locale}", :id => "#{locale}" do %>
 						<div>
-							<%= t :title %>
+							<%= t 'admin.site_title' %>
 							<%= f.fields_for :title, @site.title do |f| %>
 								<%= f.text_field locale %>
 							<% end %>
 						</div>
 						<div>
-							<%= t :keywords %>
+							<%= t 'admin.keywords' %>
 							<%= f.fields_for :keywords, @site.keywords do |f| %>
 								<%= f.text_field locale %>
 							<% end %>
 						</div>
 						<div>
-							<%= t :description %>
+							<%= t 'admin.site_description' %>
 							<%= f.fields_for :description, @site.description do |f| %>
 								<%= f.text_field locale %>
 							<% end %>
 						</div>
 						<div>
-							<%= t :footer %>
+							<%= t 'admin.site_footer' %>
 							<%= f.fields_for :footer, @site.footer do |f| %>
 								<%= f.text_area locale, :class => "tinymce_textarea" %>
 							<% end %>