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/User.php

@@ -1174,6 +1174,13 @@ class User implements UserInterface, EquatableInterface, ThemeUserInterface, Pas
         return (int) $this->getPreferenceValue(UserPreference::WORK_HOURS_SUNDAY, 0);
     }
 
+    public function getPublicHolidayGroup(): null|string
+    {
+        $group = $this->getPreferenceValue(UserPreference::PUBLIC_HOLIDAY_GROUP);
+
+        return $group === null ? $group : (string) $group;
+    }
+
     public function getHolidaysPerYear(): int
     {
         return (int) $this->getPreferenceValue(UserPreference::HOLIDAYS_PER_YEAR, 0);
@@ -1214,6 +1221,11 @@ class User implements UserInterface, EquatableInterface, ThemeUserInterface, Pas
         $this->setPreferenceValue(UserPreference::WORK_HOURS_SUNDAY, $seconds);
     }
 
+    public function setPublicHolidayGroup(null|string $group = null): void
+    {
+        $this->setPreferenceValue(UserPreference::PUBLIC_HOLIDAY_GROUP, $group);
+    }
+
     public function setHolidaysPerYear(int $holidays): void
     {
         $this->setPreferenceValue(UserPreference::HOLIDAYS_PER_YEAR, $holidays);