Add a configurable avatar system and add an internal avatar system for enterprise

config.py

@@ -19,7 +19,7 @@ def build_requests_session():
 CLIENT_WHITELIST = ['SERVER_HOSTNAME', 'PREFERRED_URL_SCHEME', 'MIXPANEL_KEY',
                     'STRIPE_PUBLISHABLE_KEY', 'ENTERPRISE_LOGO_URL', 'SENTRY_PUBLIC_DSN',
                     'AUTHENTICATION_TYPE', 'REGISTRY_TITLE', 'REGISTRY_TITLE_SHORT',
-                    'CONTACT_INFO']
+                    'CONTACT_INFO', 'AVATAR_KIND']
 
 
 def getFrontendVisibleConfig(config_dict):
@@ -46,6 +46,8 @@ class DefaultConfig(object):
   PREFERRED_URL_SCHEME = 'http'
   SERVER_HOSTNAME = 'localhost:5000'
 
+  AVATAR_KIND = 'local'
+
   REGISTRY_TITLE = 'Quay.io'
   REGISTRY_TITLE_SHORT = 'Quay.io'
   CONTACT_INFO = [