Improve ability to discriminate between django and mako template

Django-format comments are now used to detect a django template.
Note: Django templates are still not linted.

scripts/tests/test_xss_linter.py

@@ -578,6 +578,7 @@ class TestMakoTemplateLinter(TestLinter):
     @data(
         {'template': '{% extends "wiki/base.html" %}'},
         {'template': '{{ message }}'},
+        {'template': '{# comment #}'},
     )
     def test_check_mako_on_django_template(self, data):
         """

scripts/xss_linter.py

@@ -2003,7 +2003,7 @@ class MakoTemplateLinter(BaseLinter):
             True if this is really a Django template, and False otherwise.
 
         """
-        if re.search('({%.*%})|({{.*}})', mako_template) is not None:
+        if re.search('({%.*%})|({{.*}})|({#.*#})', mako_template) is not None:
             return True
         return False