Add class for Ray's check-box

Fix some typos
Change the default index for auth
Add some hard code in object_auth.rb to handle page_context
A user cannot select himself in authorisation

app/views/layouts/back_end.html.erb

@@ -5,11 +5,11 @@
 	<%= render 'layouts/meta' %>
 	<%= render 'layouts/google_font' %>
 	<%= stylesheet_link_tag "back_end" %>
-	<%= stylesheet_link_tag params[:controller] if Rails.application.assets.find_asset params[:controller] %>
+	<%= stylesheet_link_tag params[:controller] if Rails.application.assets.find_asset "#{params[:controller]}.css" %>
   <%= yield :page_specific_css %>
 	<%= render 'layouts/ie_html5_fix' %>
 	<%= javascript_include_tag "back_end" %>
-	<%= javascript_include_tag params[:controller] if Rails.application.assets.find_asset params[:controller] %>
+	<%= javascript_include_tag params[:controller] if Rails.application.assets.find_asset "#{params[:controller]}.js" %>
 	<%= yield :page_specific_javascript %>
 	<%= csrf_meta_tag %>
 </head>

app/views/layouts/basic_back_end.html.erb

@@ -5,10 +5,10 @@
   <%= render 'layouts/meta' %>
   <%= render 'layouts/google_font' %>
   <%= stylesheet_link_tag "basic" %>
-  <%= stylesheet_link_tag params[:controller] %>
+  <%= stylesheet_link_tag params[:controller] if Rails.application.assets.find_asset "#{params[:controller]}.css" %>
   <%= render 'layouts/ie_html5_fix' %>
   <%= javascript_include_tag "basic" %>
-  <%= javascript_include_tag params[:controller] %>
+  <%= javascript_include_tag params[:controller] if Rails.application.assets.find_asset "#{params[:controller]}.js" %>
   <%= yield :page_specific_css %>
   <%= yield :page_specific_javascript %>
   <%= csrf_meta_tag %>