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/Constants.php

@@ -17,11 +17,11 @@ class Constants
     /**
      * The current release version
      */
-    public const VERSION = '2.0.25';
+    public const VERSION = '2.0.26';
     /**
      * The current release: major * 10000 + minor * 100 + patch
      */
-    public const VERSION_ID = 20025;
+    public const VERSION_ID = 20026;
     /**
      * The software name
      */