Add [:instances_favicons, :enabled] setting, defaults to false

config/config.exs

@@ -706,6 +706,8 @@ config :tzdata, :http_client, Pleroma.HTTP.Tzdata
 
 config :ex_aws, http_client: Pleroma.HTTP.ExAws
 
+config :pleroma, :instances_favicons, enabled: false
+
 # Import environment specific config. This must remain at the bottom
 # of this file so it overrides the configuration defined above.
 import_config "#{Mix.env()}.exs"

config/description.exs

@@ -3447,5 +3447,18 @@ config :pleroma, :config_description, [
         suggestions: [false]
       }
     ]
+  },
+  %{
+    group: :pleroma,
+    key: :instances_favicons,
+    type: :group,
+    description: "Control favicons for instances",
+    children: [
+      %{
+        key: :enabled,
+        type: :boolean,
+        description: "Allow/disallow displaying and getting instances favicons"
+      }
+    ]
   }
 ]

config/test.exs

@@ -111,6 +111,8 @@ config :pleroma, Pleroma.Plugs.RemoteIp, enabled: false
 
 config :pleroma, Pleroma.Web.ApiSpec.CastAndValidate, strict: true
 
+config :pleroma, :instances_favicons, enabled: true
+
 if File.exists?("./config/test.secret.exs") do
   import_config "test.secret.exs"
 else