clean up useless flash msgs. add i18n vars for app auth and object auth

app/views/admin/dashboards/index.html.erb

@@ -1,5 +1,3 @@
-<%= flash_messages %>
-
 <div id="isotope">
     <div class="item element">
         <h3><i class="icons-content"></i><a href=""><%= t(:content) %></a></h3>

app/views/layouts/_side_bar.html.erb

@@ -4,7 +4,6 @@
 <% content_for :page_specific_javascript do %>
 	<%= javascript_include_tag "/static/kernel.js"  %>
 <% end %>
-<%= flash_messages %>
 
 <%= content_tag :li, :class => active_for_controllers('bulletins', '/panel/announcement/back_end/tags', 'bulletin_categorys','module_apps', 'approvals') do -%>
 	<%= link_to content_tag(:i, nil, :class => 'icons-announcement') + t('admin.announcement'), panel_announcement_back_end_bulletins_path %>