tweak publi display

publications.markdown

@@ -6,21 +6,27 @@ subtitle: Publications
 
 {% assign authors = site.data.authors %}
 
+{% if site.data.submitted %}
 # Articles soumis (preprints)
 
 <ol reversed>
 {% for pub in site.data.submitted %}{% include publi_row.html pub=pub authors=authors %}{% endfor %}
 </ol>
+{% endif %}
 
+{% if site.data.accepted %}
 # Articles acceptés
 
 <ol reversed>
 {% for pub in site.data.accepted %}{% include publi_row.html pub=pub authors=authors %}{% endfor %}
 </ol>
+{% endif %}
 
 
+{% if site.data.published %}
 # Articles publiés
 
 <ol reversed>
 {% for pub in site.data.published %}{% include publi_row.html pub=pub authors=authors %}{% endfor %}
 </ol>
+{% endif %}