String to OUString + helper function
String to OUString + helper function

Change-Id: I9a318c50bc2427f55f58a13f96cbcb68fbc66f21

JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core,JurassicWordExcel/core