FlightPath 6.x-6.20.1

Referenced project: 
Release version: 
6.20.1
Release type: 
Security - High Priority!
Release notes: 

2024-10-12
Was alerted to possible XSS vulnerabilities (fixing in this release) by Rauf Giray Doğan (https://github.com/redhotchilihacker1)

Added convenience function filter_plain($str) to help sanitize fields which obviously should not contain HTML tags.

Modified various spots in the codebase to use either filter_plain() or filter_markup() where appropriate, to mitigate
any possible XSS vulnerabilities.

2024-05-25
Moving to no longer be the default branch on github. Instead, that will be the 7x branch.

2024-04-24
Updated README.txt for information re: the silk icon set.

2024-04-08
Removed possible exploit vector that would have allowed users without the proper permissions to submit
the "report contact" form.

Modification to SMTP module to add MessageID to sent emails.