Creation of a new submenu under Applications/General for the Email communication.
Moved advanced of dicuss to this new submenu + adding of content regarding
frequently asked question in support.
Redirection has been done on other files pointing to Discuss/Advanced to match
the new folder email_communication.
Modified content in:
- Email servers: split and move configuration part under email_domain
- Email domain: covering information about SPF DKIM and DMARC configurations by JQU
- Email templates: (how to use the functions) by GOR
- Email common: answering frequently asked questions + common issues by ALA
fcc317615a