Backport r922960 by tmcguire from trunk to the 4.2 branch:
Backport r922960 by tmcguire from trunk to the 4.2 branch:

Also hide the msg.asc attachment for encrypted mail.

svn path=/branches/KDE/4.2/kdepim/; revision=925421

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