Add Django 1.10 support

cas_server/tests/settings.py

@@ -11,6 +11,7 @@ https://docs.djangoproject.com/en/1.9/ref/settings/
 """
 
 import os
+import django
 
 # Build paths inside the project like this: os.path.join(BASE_DIR, ...)
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
@@ -40,7 +41,7 @@ INSTALLED_APPS = [
     'cas_server',
 ]
 
-MIDDLEWARE_CLASSES = [
+MIDDLEWARE = [
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',
     'django.middleware.csrf.CsrfViewMiddleware',
@@ -50,6 +51,8 @@ MIDDLEWARE_CLASSES = [
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
     'django.middleware.locale.LocaleMiddleware',
 ]
+if django.VERSION < (1, 10):
+    MIDDLEWARE_CLASSES = MIDDLEWARE
 
 TEMPLATES = [
     {