Protected areas of imported doc(x) documents are now protected even when
the “enable cursor” option is disabled: It is still possible to set the
cursor into the protected area, but the text is not editable anymore.

Change-Id: If45dfc82fb7cc70e0a6569a9d735eafcafda9bc2
Reviewed-on: https://gerrit.libreoffice.org/28075Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Oliver Specht <oliver.specht@cib.de>