Provide a proper parent for the "ask to overwrite" dialog.
Provide a proper parent for the "ask to overwrite" dialog.

kolab/issue2142

svn path=/branches/kdepim/enterprise/kdepim/; revision=733495

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