Queue XmppSetAvatarJob when new avatar is uploaded

And let job do nothing in development for now

app/controllers/settings_controller.rb

@@ -36,6 +36,7 @@ class SettingsController < ApplicationController
       if @user.avatar_new.present?
         if store_user_avatar
           LdapManager::UpdateAvatar.call(user: @user)
+          XmppSetAvatarJob.perform_later(user: @user)
         else
           @validation_errors = @user.errors
           render :show, status: :unprocessable_entity and return

app/jobs/xmpp_set_avatar_job.rb

@@ -5,11 +5,12 @@ class XmppSetAvatarJob < ApplicationJob
   queue_as :default
 
   def perform(user:, overwrite: false)
+    return if Rails.env.development?
     @user = user
 
     unless overwrite
       current_avatar = get_current_avatar
-      Rails.logger.debug { "User #{user.cn} already has an avatar set. Nothing to do." }
+      Rails.logger.info { "User #{user.cn} already has an avatar set" }
       return if current_avatar.present?
     end
 
@@ -56,6 +57,7 @@ class XmppSetAvatarJob < ApplicationJob
       end
     end
 
+    # See https://xmpp.org/extensions/xep-0084.html
     def build_xep0084_stanzas
       img_data    = process_avatar
       sha1_hash   = Digest::SHA1.hexdigest(img_data)