add MITX_FEATURES['DISPLAY_HISTOGRAMS_TO_STAFF'] flag to settings

lms/djangoapps/courseware/module_render.py

@@ -169,7 +169,7 @@ def render_x_module(user, request, xml_module, module_object_preload, position=N
     content = instance.get_html()
 
     # special extra information about each problem, only for users who are staff 
-    if False and user.is_staff:
+    if settings.MITX_FEATURES.get('DISPLAY_HISTOGRAMS_TO_STAFF') and user.is_staff:
         module_id = xml_module.get('id')
         histogram = grade_histogram(module_id)
         render_histogram = len(histogram) > 0

lms/envs/common.py

@@ -37,6 +37,7 @@ PERFSTATS = False
 MITX_FEATURES = {
     'SAMPLE' : False,
     'USE_DJANGO_PIPELINE' : True,
+    'DISPLAY_HISTOGRAMS_TO_STAFF' : True,
 }
 
 # Used for A/B testing

lms/envs/dev_ike.py

@@ -28,6 +28,7 @@ ENABLE_MULTICOURSE = True     # set to False to disable multicourse display (see
 QUICKEDIT = True
 
 # MITX_FEATURES['USE_DJANGO_PIPELINE'] = False
+MITX_FEATURES['DISPLAY_HISTOGRAMS_TO_STAFF'] = False
 
 COURSE_SETTINGS =  {'6.002_Spring_2012': {'number' : '6.002x',
                                           'title'  :  'Circuits and Electronics',