Optimization of download and design directions on Modx

Update Modx to the latest version, correct security errors, update version jQuery, compression displayed, addвление robots.txt; sitemap.xml, connection site to the cloud, switch to version php 7.3, correct in the mobile layer menu, etc.
UPDATE: Integration of forms with the CRM system - Vtiger CRM 7.1.0, correction of the product slider output.