FlightPath 4.x-4.3.1

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

Fixed a bug where the grade "E" was hard-coded at one spot to mean "enrolled", instead
if that being a setting. Added a new field "default_enrolled_grade" to the System Settings form
for this purpose.

Added code to facilitate language translations through the t() function, once the locale module
is fully implemented.

Fixed bug in form api where #redirect should be ignored if the form failed validation.