when declining, don't complain about a missing invitation in your calendar if you haven't put it there yet. kolab/issue3922
when declining, don't complain about a missing invitation in your calendar if you
haven't put it there yet.
kolab/issue3922

also, use information dialogs instead of error dialogs to tell the user that
the invitation is missing from their calendar.

MERGE: e4 (already in trunk)

svn path=/branches/kdepim/enterprise/kdepim/; revision=1039545

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