FET-5.22.0 released

[Liviu Lalescu]

From the ChangeLog:

- Updated to Qt 5.3.0.
- Many improvements on memory and speed in pre-generating and after-generating.
- Corrected a crash bug under Windows (for extremely large files).
- Now you can unlock all activities or activities of a single day without generating the timetable (suggested by Volker Dirr).
- Increased the maximum number of divisions in the first and second categories when dividing a year (suggested by Bobby Wise).
- Added a new Morocco example file, by Mohamed Bahaj.