revert removing "icon" key from MessageTag groups
revert removing "icon" key from MessageTag groups


svn path=/branches/KDE/4.1/kdepim/; revision=834706

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