Speed up changing into folders by about a factor 3 by removing an optimi- zation working around a qlistview bug the disappearance of which caused the simple way of doing it to be much more efficient. So we do that now.
Speed up changing into folders by about a factor 3 by removing an optimi-
zation working around a qlistview bug the disappearance of which caused
the simple way of doing it to be much more efficient. So we do that now.

svn path=/trunk/kdepim/; revision=245359

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