FlightPath 5.x-5.2.1

Referenced project: 
Release version: 
Release type: 
Bug fixes and new features
Release notes: 

Modified .htaccess mod_header rules, to make a little more lax for local sites.

Fixed a display bug, where the number of hours (in the course description popup) were not showing
the correct substitution value, if they were split in a substitution. Likewise, it was not showing
the correct "hours remaining" if we were looking at a "new_from_substitution" course piece.