Avoid unneeded OUString conversions and concatenated appends
Avoid unneeded OUString conversions and concatenated appends

Change-Id: Ied9fded44e1deee17be4c02f10261a459f88e530

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