Allow overriding the default avatar image

(imported from commit 66d413682a822e0019f28033f19908bdd9fa0156)

zerver/lib/avatar.py

@@ -40,4 +40,4 @@ def get_avatar_url(avatar_source, email):
         hash_key = gravatar_hash(email)
         return "https://secure.gravatar.com/avatar/%s?d=identicon" % (hash_key,)
     else:
-        return '/static/images/default-avatar.png?x=x'
+        return settings.DEFAULT_AVATAR_URI+'?x=x'

zproject/local_settings_template.py

@@ -85,6 +85,11 @@ NAME_CHANGES_DISABLED = False
 # from gravatar.com.
 ENABLE_GRAVATAR = True
 
+# To override the default avatar image if ENABLE_GRAVATAR is False, place your
+# custom default avatar image at /home/zulip/local-static/default-avatar.png
+# and uncomment the following line.
+#DEFAULT_AVATAR_URI = '/local-static/default-avatar.png'
+
 ### TWITTER INTEGRATION
 
 # Zulip supports showing inline Tweet previews when a tweet is linked

zproject/settings.py

@@ -266,6 +266,7 @@ DEFAULT_SETTINGS = {'TWITTER_CONSUMER_KEY': '',
                     'CAMO_URI': None,
                     'ENABLE_FEEDBACK': True,
                     'ENABLE_GRAVATAR': True,
+                    'DEFAULT_AVATAR_URI': '/static/images/default-avatar.png',
                     }
 
 for setting_name, setting_val in DEFAULT_SETTINGS.iteritems():