TMSS-272: allow for gzipped responses if the request accecpts them

SAS/TMSS/src/tmss/settings.py

@@ -119,6 +119,7 @@ INSTALLED_APPS = [
 ]
 
 MIDDLEWARE = [
+    'django.middleware.gzip.GZipMiddleware',
     'django.middleware.security.SecurityMiddleware',
     'django.contrib.sessions.middleware.SessionMiddleware',
     'django.middleware.common.CommonMiddleware',