allow to remove personalization configs

app/controllers/personalization_settings_controller.rb

@@ -18,6 +18,8 @@ class PersonalizationSettingsController < ApplicationController
   end
 
   def create
+    @account_config.value = @account_config.value.compact_blank if @account_config.value.is_a?(Hash)
+
     if @account_config.value != false && @account_config.value.blank?
       @account_config.destroy!
     else