add API setting for UI live updates

include context data

update help text

awx/ui/views.py

@@ -2,6 +2,7 @@
 # All Rights Reserved.
 
 from django.views.generic.base import TemplateView, RedirectView
+from django.conf import settings
 
 class IndexView(TemplateView):
 
@@ -9,6 +10,7 @@ class IndexView(TemplateView):
 
     def get_context_data(self, **kwargs):
         context = super(IndexView, self).get_context_data(**kwargs)
+        context['UI_LIVE_UPDATES_ENABLED'] = settings.UI_LIVE_UPDATES_ENABLED
         # Add any additional context info here.
         return context