Fix when user is not logged

jm2l/templates/view_event.mako

@@ -15,9 +15,9 @@ ${event.start_time.strftime('%H:%M')} à ${event.end_time.strftime('%H:%M')}
 %if event.event_uid:
     <a href="http://jm2l.linux-azur.org/node/${event.event_uid}">Link</a> -
 %endif
-% if event.for_year==2015 and (request.user.Staff or request.user in event.intervenants):
+% if event.for_year==2015 and request.user and (request.user.Staff or request.user in event.intervenants):
     <a href="/MesJM2L/${event.for_year}/${event.event_type}/${event.slug}">Editer</a>
-% elif request.user.Staff:
+% elif request.user and request.user.Staff:
     <a href="/MesJM2L/${event.for_year}/${event.event_type}/${event.slug}">Editer</a>
 % endif
 <h3 style="line-height:30px;">${event.name}</h3>