FlightPath 6.x-6.2.1

Referenced project: 
Release core: 
6.x
Release version: 
6.2.1
Release ZIP file: 
Release type: 
Other
Release notes: 

Minor tweak when loading degree to prevent PHP warning.

Since "groups" is a reserved keyword in MySQL 8+, edited various files to enclose in backticks when performing sql on that table.