anchor.diff:  <% this_user = User.find(session[:user_id]) if session[:user_id] %>
   <% arrow_dir = rtl? ? "◀" : "▶" %>
  +<% @modules = Configuration.available_modules %>
   <ul id="main-menu">
     <li><%= link_to t('dashboard_text'), :controller => "user", :action => "dashboard" %></li>
     <li><%= link_to t('students'), :controller => "student", :action => "index" \
  
positive.code:         <li><%= link_to "#{t('view_timetable')}", :controller => "timetable", :action => "view" %></li>
        <%  end%>
        <%  if permitted_to? :edit,:timetable%>
          <% @config = Configuration.get_config_value('StudentAttendanceType') %>
          <% if @config == 'SubjectWise' %>
            <li><%= link_to "#{t('swap_class')}", :controller => "timetable", :action => "extra_class" %></li>
          <%  end %>
        <%  end %>
  
negative.code:         <li><%= link_to "#{t('add_admission_additional_detail')}", :controller=>"student", :action => "add_additional_details" %></li>
        <% end %>
        <% if permitted_to? :index, :sms %>
          <% if @modules.include?('SMS') %>
            <li><%= link_to "#{t('sms_module')}", :controller=>"sms", :action => "index" %></li>
          <% end %>
        <% end %>
  