Allow ./manage.py without args (#130)

Author: jonatron

tests/settings.py

@@ -6,7 +6,7 @@
 
 BASE_DIR = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
 
-IN_TEST = sys.argv[1] == "test"
+IN_TEST = len(sys.argv) > 1 and sys.argv[1] == "test"
 
 ALLOWED_HOSTS = ["*"]