anchor.diff:  <!DOCTYPE html>
   <html lang="en">
  +
   <head>
     <meta charset="utf-8">
     <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
  
positive.code:   <meta name="relative-url-root" content="<%= Rails.application.config.relative_url_root%>" />
    <%= favicon_link_tag asset_path('favicon-32.png'), :rel => 'icon', :type =>  'image/png' %>
  </head>
  <body>
  	<nav class="navbar navbar-expand-md navbar-dark bg-dark fixed-top" role="navigation">
  	  <%= link_to mdas_path, class: "navbar-brand" do %> 
        <%= image_tag "logo_whatsopt_v1.0.svg", alt: "Logo", width: 32, height: 32, class: "d-inline-block align-top" %>
        <span>WhatsOpt</span> 
  	  <% end %>
  	  <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNavDropdown" aria-controls="navbarNavDropdown" aria-expanded="false" aria-label="Toggle navigation">
  	    <span class="navbar-toggler-icon"></span>
  	  </button>
  
      <div class="collapse navbar-collapse" id="navbarNavDropdown">
        <ul class="navbar-nav mr-auto">	
        <% if user_signed_in? %>
  		    <li class="nav-item"><%= link_to "Analyses", mdas_path, class: "nav-link" %></li>
        <% end %>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="dropdown01" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Help</a>
            <div  class="dropdown-menu" aria-labelledby="dropdown01">
              <%= link_to "Doc", "https://whatsopt.readthedocs.io/en/latest/", class: "dropdown-item" %>
              <%= link_to "ApiDoc", api_doc_path, class: "dropdown-item" %>
              <div class="dropdown-divider"></div>
              <%= link_to "Issues", "https://github.com/OneraHub/WhatsOpt/issues", class: "dropdown-item" %>
            </div>
          </li>      
        </ul>
  
        <ul class="navbar-nav">
        <% if user_signed_in? %>
          <li class="nav-item dropdown">
            <a class="nav-link dropdown-toggle" href="#" id="dropdown02" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false"><%= current_user.login %></a>
            <div class="dropdown-menu dropdown-menu-right" aria-labelledby="dropdown02">
  
negative.code:             <%= link_to "Sign out", destroy_user_session_path, method: :delete, class: "dropdown-item" %>
            </div>
          </li>
          <% else %>
          <li class="nav-item">
            <% if current_page?(user_session_path) %>
            <%= link_to "Sign in", user_session_path, class: "nav-link disabled" %>
            <% else %>
            <%= link_to "Sign in", user_session_path, class: "nav-link" %>
            <% end %>
          </li>
          <% end %>
        </ul>
        <% if !user_signed_in? %>
  
        <% end %>
      </div>
    </nav>
  
    <div class="container-fluid main-container">
      <%= render 'layouts/messages' %>
      <%= yield %>
    </div>
  
    <div>
      <%= yield :document_ready %>
    </div>
  
    <footer class="footer">
      <small>
        WhatsOpt, version:
        <% if user_signed_in? %>
        <%= link_to_unless_current whatsopt_version, changelog_path =%>,
        <%= deployment_info %>,
        <%= mail_to "remi.lafage@onera.fr", "contact", :encode => "hex" %>
        <% else %>
        <%= whatsopt_version %>, <%= deployment_info %>
        <% end %>
      </small>
    </footer>
  </body>
  
  </html>