forward port: SVN commit 479616 by winterz:
forward port:
SVN commit 479616 by winterz:

use RichText to display the special date summary, which makes long summaries
display much nicer.

svn path=/trunk/KDE/kdepim/kontact/plugins/; revision=491385

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