I forgot domain aliases!

see #116

modoboa/admin/models.py

@@ -513,6 +513,9 @@ class DomainAlias(DatesAware):
         ungrant_access_to_object(self)
         super(DomainAlias, self).delete()
 
+    def to_csv(self, csvwriter):
+        csvwriter.writerow(["domainalias", self.name, self.target.name])
+
 class Mailbox(DatesAware):
     address = models.CharField(
         ugettext_lazy('address'), max_length=100,

modoboa/admin/views.py

@@ -722,6 +722,8 @@ def export_domains(request):
     csvwriter = csv.writer(fp, delimiter=';')
     for dom in request.user.get_domains():
         dom.to_csv(csvwriter)
+        for da in dom.domainalias_set.all():
+            da.to_csv(csvwriter)
     
     content = fp.getvalue()
     fp.close()