Dependencies

These all need upgrading.

JavaScript

• JQuery 1.8.3 (latest version 3.5.1)

Consider switching to CDN's for JavaScript dependencies. Makes upgrading in the future as easy as changing 1 line of code.

PHP

• PHPMailer 5.2.8 (latest version 6.1.7)
  • The classic email sending library for PHP
• lib_autolink (latest version 1.7)
  • PHP HTML link formatting library. Find URLs in HTML that are not already links, and make them into links.