o backport SVN commit 987457 by zachmann:
o Fix Bug 197926: KPresenter crashes when opening non existing file
Try to load the empty landscape template when the file does not exist, in case it is not found the default page layout will be used. This also fixes these bug for kivio. Thanks to Jos for pointing out this problem on IRC.
CCBUG: 197926
svn path=/branches/koffice/2.0/koffice/; revision=987957