Adds home button to the tournament navigation

tournaments/templates/tournaments/navigation_tournament.html

@@ -1,6 +1,9 @@
 <nav class="margin10">
 
+    <a href="{% url 'index' %}" class="topmargin5 orange">Accueil</a>
+
     <a href="{% url 'tournament-info' tournament.id %}" class="topmargin5 orange">Informations</a>
+
     {% if tournament.display_prog %}
     <a href="{% url 'tournament-prog' tournament.id %}" class="topmargin5 orange">Programmation</a>
     {% endif %}