resize history widget's columns
resize history widget's columns

svn path=/trunk/KDE/kdepim/ktimetracker/; revision=718632

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