Get rid of categories at dataproxy level. For pc side we will only deal on record level with categories.
Get rid of categories at dataproxy level. For pc side we will only deal on
record level with categories.

svn path=/trunk/KDE/kdepim/; revision=771373

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