Volker/Hannah fixed building on windows

Revert "Disable kitinerary on windows as it doesn't build yet"

This reverts commit 84ebe12c.

CMakeLists.txt

@@ -122,10 +122,7 @@ find_package(KF5ContactEditor ${AKONADICONTACT_LIB_VERSION} CONFIG REQUIRED)
 find_package(KPimImportWizard ${IMPORTWIZARD_LIB_VERSION} CONFIG)
 find_package(KF5MailImporterAkonadi ${MAILIMPORTER_LIB_VERSION} CONFIG REQUIRED)
 find_package(KPimPkPass ${KPIMPKPASS_LIB_VERSION} CONFIG REQUIRED)
-find_package(KPimItinerary ${KPIMITINERARY_LIB_VERSION} CONFIG )
-if (NOT WIN32)
-    set_package_properties(KPimItinerary PROPERTIES TYPE REQUIRED)
-endif()
+find_package(KPimItinerary ${KPIMITINERARY_LIB_VERSION} CONFIG REQUIRED)
 find_package(KF5KontactInterface ${KONTACTINTERFACE_LIB_VERSION} CONFIG REQUIRED)
 
 set(GRANTLEE_LIB_VERSION "5.2.0")

plugins/messageviewer/CMakeLists.txt

 add_subdirectory(bodypartformatter)
-if(TARGET KPim::Itinerary)
-    add_subdirectory(grantlee)
-endif()
+add_subdirectory(grantlee)

plugins/messageviewer/bodypartformatter/CMakeLists.txt

@@ -7,9 +7,7 @@ add_subdirectory(highlighter)
 add_subdirectory(calendar)
 add_subdirectory(gnupgwks)
 add_subdirectory(pkpass)
-if (TARGET KPim::Itinerary)
-    add_subdirectory(itinerary)
-endif()
+add_subdirectory(itinerary)
 
 if (Qt5Widgets_VERSION VERSION_LESS 5.14.0)
     set(USE_DISCOUNT_LIB TRUE)