Release 2.0.26 (#4087)

- setting "rounding days" not required
- developer: added user pref for public holiday group (to be used by plugins)
- developer: added WorkingTimeYearEvent (to be used by plugins)
- user pref: cleanup work contract form and support more fields (to be used by plugins)
- code cleanup
- bump theme and composer packages

src/Entity/UserPreference.php

@@ -38,6 +38,7 @@ class UserPreference
     public const WORK_HOURS_FRIDAY = 'work_friday';
     public const WORK_HOURS_SATURDAY = 'work_saturday';
     public const WORK_HOURS_SUNDAY = 'work_sunday';
+    public const PUBLIC_HOLIDAY_GROUP = 'public_holiday_group';
     public const HOLIDAYS_PER_YEAR = 'holidays';
 
     #[ORM\Id]