Added Django template backend.

django/template/backends/base.py

+# Since this package contains a "django" module, this is required on Python 2.
+from __future__ import absolute_import
+
 from django.core.exceptions import (
     ImproperlyConfigured, SuspiciousFileOperation)
 from django.template.utils import get_app_template_dirs

django/template/backends/django.py

+# Since this package contains a "django" module, this is required on Python 2.
+from __future__ import absolute_import
+
+from django.conf import settings
+from django.template.context import Context, RequestContext
+from django.template.engine import Engine
+
+
+from .base import BaseEngine
+
+
+class DjangoTemplates(BaseEngine):
+
+    app_dirname = 'templates'
+
+    def __init__(self, params):
+        params = params.copy()
+        options = params.pop('OPTIONS').copy()
+        options.setdefault('debug', settings.TEMPLATE_DEBUG)
+        options.setdefault('file_charset', settings.FILE_CHARSET)
+        super(DjangoTemplates, self).__init__(params)
+        self.engine = Engine(self.dirs, self.app_dirs, **options)
+
+    def from_string(self, template_code):
+        return Template(self.engine.from_string(template_code))
+
+    def get_template(self, template_name):
+        return Template(self.engine.get_template(template_name))
+
+
+class Template(object):
+
+    def __init__(self, template):
+        self.template = template
+
+    def render(self, context=None, request=None):
+        if request is None:
+            context = Context(context)
+        else:
+            context = RequestContext(request, context)
+        return self.template.render(context)

django/template/backends/dummy.py

+# Since this package contains a "django" module, this is required on Python 2.
+from __future__ import absolute_import
+
 import io
 import string
 

django/template/backends/jinja2.py

+# Since this package contains a "django" module, this is required on Python 2.
+from __future__ import absolute_import
+
 import sys
 
 from django.conf import settings

django/template/backends/utils.py

+# Since this package contains a "django" module, this is required on Python 2.
+from __future__ import absolute_import
+
 from django.middleware.csrf import get_token
 from django.utils.functional import lazy
 from django.utils.html import format_html