don't open two external browser windows when opening the feed homepage
don't open two external browser windows when opening the feed homepage

svn path=/branches/KDE/3.5/kdepim/; revision=483822

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