Forward port of:
Forward port of:

SVN commit 439457 by tilladam:

Skip duplicate incidences in read-only folders and don't offer conflict
resolution. The user could otherwise put new mails into read-only folder
and would later be unable to sync them up again.

svn path=/branches/KDE/3.5/kdepim/; revision=439495

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