After deleting a task, the time must be recalculated.
After deleting a task, the time must be recalculated.

svn path=/trunk/KDE/kdepim/ktimetracker/; revision=1029235

lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi,lefou/kdepim-noakonadi