Fix Staff condition for non logged people

jm2l/templates/list_tiers.mako

@@ -39,7 +39,7 @@
                 <strong>
                     <a href="/entity/${entity.get_entity_type.entity_type}/${entity.slug}">${entity.name}</a>
                 </strong>
-            % if request.user.Staff:
+            % if request.user and request.user.Staff:
                 <span style="float:right;">
                     <a href="/entity/${entity.get_entity_type.entity_type}/${entity.slug}/edit">edit</a>
                 </span>
@@ -54,4 +54,4 @@
     </div>
 
    </div>
-</div>
+</div>

jm2l/templates/view_tiers.mako

@@ -16,7 +16,7 @@ ${The_entity_type.entity_subtype}
 %if entity.tiers_id:
     <a href="http://jm2l.linux-azur.org/node/${entity.tiers_id}">Link</a> -
 %endif
-% if (request.user.Staff or request.user in entity.members):
+% if request.user and (request.user.Staff or request.user in entity.members):
     <a href="/entity/${entity.get_entity_type.entity_type}/${entity.slug}/edit">Editer</a>
 % endif
     <div clear='both'></div>
@@ -93,4 +93,4 @@ ${The_entity_type.entity_subtype}
 <hr/>
 
    </div>
-</div>
+</div>