config: allow setting of holidays for each user

__init__.py

@@ -9,10 +9,13 @@ from .planner import ScheduledBooking, ScheduledBookingCashbookRel
 from .cashbook import Cashbook, CashbookLine
 from .cron import Cron
 from .nextrun import NextRun
+from .config import Configuration, UserConfiguration
 
 
 def register():
     Pool.register(
+        Configuration,
+        UserConfiguration,
         Rule,
         ScheduledBooking,
         NextRun,