o Only draw a frame around text/plain parts if they have a filename set. o Fix display of t/p parts when using the smart attachment strategy:   They're now also shown inline if they have no filename associated with them.
o Only draw a frame around text/plain parts if they have a filename set.
o Fix display of t/p parts when using the smart attachment strategy:
  They're now also shown inline if they have no filename associated with them.

Together, they fix display of multi-part text messages, such as Simon Josefsson's nice example mail, which has a tradition of having it's display being broken in KMail ;-)

svn path=/trunk/kdepim/; revision=223610

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