Fix disable edit button when we clear search action.
Fix disable edit button when we clear search action.

svn path=/trunk/kdepim/; revision=215965

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