Make the kabc model deal with the no-content and invalid collection cases as well.
Make the kabc model deal with the no-content and invalid collection cases as well.

svn path=/branches/work/akonadi-ports/kdepim/; revision=984079

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