FET-5.26.0 released

[Liviu Lalescu]

On Monday, 26 January 2015, FET-5.26.0 was released. From the ChangeLog:

- FET is now licensed under the GNU Affero General Public License version 3 or later (suggested by Volker Dirr).
- Improved the speed of importing from comma separated values (CSV) files, especially when dealing with many students sets.
- Improved the speed of adding/modifying the (sub)activities from the corresponding dialogs (not noticeable, in usual cases).
- Other speed improvements in the interface.
- Leak and crash bug fixes (not usually met).
- Some minor strings improvements.
- Code cleanup.