better support for atom:content, copied some code over from libsyndication
better support for atom:content, copied some code over from libsyndication

svn path=/branches/KDE/3.5/kdepim/; revision=516080

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