Put Require.js in debug mode in LMS acceptance tests

lms/envs/acceptance.py

@@ -208,6 +208,7 @@ SECRET_KEY = uuid.uuid4().hex
 ############################### PIPELINE #######################################
 
 PIPELINE_ENABLED = False
+REQUIRE_DEBUG = True
 
 # We want to make sure that any new migrations are run
 # see https://groups.google.com/forum/#!msg/django-developers/PWPj3etj3-U/kCl6pMsQYYoJ