Backport r1072067 by smartins from trunk to the 4.4 branch:
Backport r1072067 by smartins from trunk to the 4.4 branch:

Open the combo when clicking on the default text.

Review: http://reviewboard.kde.org/r/2532

svn path=/branches/KDE/4.4/kdepim/; revision=1076747

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