Added missing forward declaration of QButtonGroup
Added missing forward declaration of QButtonGroup

svn path=/trunk/kdenetwork/kmail/; revision=122928

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