OUString to OUStringBuffer and fixed ResId to OUString workaround
OUString to OUStringBuffer and fixed ResId to OUString workaround

Replaced OUString with OUStringBuffer in two plaeces where a lot of appending is done, and replaced a workaround for getting a OUString from a ResId by calls to ResId::toString

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