improved code

README.rst

@@ -244,7 +244,15 @@ Add/Update Superset Configurations
 ----------------------------------
 
 Use ``cairn-superset-settings`` patch to add or update `Superset configurations <https://github.com/apache/superset/blob/master/superset/config.py>`__.
+
+e.g, to customize visualizations, add following configurations in ``cairn-superset-settings`` patch::
+
+    APP_NAME = "<APP_NAME>"
+    APP_ICON = "<APP_ICON>"
+    APP_ICON_WIDTH = <APP_ICON_WIDTH>
+
 Then apply changes with::
+    
     tutor local launch
 
 Troubleshooting

tutorcairn/templates/cairn/apps/superset/superset_config.py

@@ -84,17 +84,22 @@
     db=REDIS_CACHE_DB,
     key_prefix="superset_results",
 )
+OPENEDX_LMS_ROOT_URL = "{% if ENABLE_HTTPS %}https{% else %}http{% endif %}://{{ LMS_HOST }}"
+OPENEDX_CMS_ROOT_URL = "{% if ENABLE_HTTPS %}https{% else %}http{% endif %}://{{ CMS_HOST }}"
+
+if os.environ.get("FLASK_ENV") == "development":
+    OPENEDX_LMS_ROOT_URL = "http://{{ LMS_HOST }}:8000"
+    OPENEDX_CMS_ROOT_URL = "http://{{ CMS_HOST }}:8001"
 
 {% if CAIRN_ENABLE_SSO %}
 # Authentication
 # https://superset.apache.org/docs/installation/configuring-superset/#custom-oauth2-configuration
 # https://flask-appbuilder.readthedocs.io/en/latest/security.html#authentication-oauth
 from flask_appbuilder.security.manager import AUTH_OAUTH
 AUTH_TYPE = AUTH_OAUTH
-OPENEDX_LMS_ROOT_URL = "{% if ENABLE_HTTPS %}https{% else %}http{% endif %}://{{ LMS_HOST }}"
+
 OPENEDX_SSO_CLIENT_ID = "{{ CAIRN_SSO_CLIENT_ID }}"
 if os.environ.get("FLASK_ENV") == "development":
-    OPENEDX_LMS_ROOT_URL = "http://{{ LMS_HOST }}:8000"
     OPENEDX_SSO_CLIENT_ID = "{{ CAIRN_SSO_CLIENT_ID }}-dev"
 OAUTH_PROVIDERS = [
     {
@@ -162,12 +167,6 @@ class CeleryConfig:  # pylint: disable=too-few-public-methods
     "EMBEDDED_SUPERSET": True
 }
 
-# Embedded Dashboard CORS
-OPENEDX_CMS_ROOT_URL = "{% if ENABLE_HTTPS %}https{% else %}http{% endif %}://{{ CMS_HOST }}"
-
-if os.environ.get("FLASK_ENV") == "development":
-    OPENEDX_CMS_ROOT_URL = "http://{{ CMS_HOST }}:8001"
-
 ENABLE_CORS=True
 CORS_OPTIONS={
     "origins": [