Merge branch 'fix/config-disable-chat' into 'develop'

Add config option for enabling/disabling chat.

See merge request pleroma/pleroma!58

lib/pleroma/web/endpoint.ex

@@ -1,7 +1,9 @@
 defmodule Pleroma.Web.Endpoint do
   use Phoenix.Endpoint, otp_app: :pleroma
 
-  socket "/socket", Pleroma.Web.UserSocket
+  if Application.get_env(:pleroma, :chat) |> Keyword.get(:enabled) do
+    socket "/socket", Pleroma.Web.UserSocket
+  end
   socket "/api/v1", Pleroma.Web.MastodonAPI.MastodonSocket
 
   # Serve at "/" the static files from "priv/static" directory.