FET 5.10.0

- Leaking bugs fixed (closed Qt widgets were not removed)
- Bug fix in generation algorithm. This bug is not seen in practice, but the code in generate.cpp was incorrect in a minor portion. Specifically, it corrected tests done when the user has constraints of type students early max beginnings at second hour, without max gaps per week for students, with max or min hours daily for students
- Added constraint teachers max days per week (suggested by Marco Barsotti)
- Made the results directory customizable (user can choose it) - suggested by Massimo Mancini. Important: under Windows, the default location is not the usual one, but $HOMEfet-results (C:Documents and Settingsusernamefet-results or C:Usersusernamefet-results)
- Fixed a bug: if user deactivated some activities, in some cases he could not generate a timetable (if using preferred times for (sub)activities)
- Added a filter in add and modify dialogs constraints activities not overlapping (suggested by Yush Yuen)
- Added a new feature in the timetable generate dialog, which allows you to see the time when the highest number of activities was placed (suggested by Yush Yuen)
- Added a Catalan translation of the manual, by Joan de Gracia
- Changed the name of the html timetable files
- Corrected many translations' layout (by Liviu Lalescu)
- Added a new test for inconsitency for indirect links between constraints actvities same starting time (suggested by Silvia)
- Minor improvement - in students statistics menu, user can select to view complete structure (duplicates enabled) or canonical structure
- Interface improvement - dialogs when removing the constraints or adding them are improved, so that they are not very large for large constraints
- Selection mode in constraints not available and preferred slots is improved - you can click table header (suggested by Massimo Mancini)
- Minor other interface improvements
- Export warns if existing files (suggested by Angela)
- Changed directory of sample inputs to 'examples'
- Added a 'Related' checkbox in activities and subactivities dialogs (suggested by Bingen)
- Speed improvement in some precomputing situations (not in generation)
- Improved size for constraints with combo boxes of very large activities (suggested by Bingen).