RTF: also import rectangles as Writer text frames
RTF: also import rectangles as Writer text frames

Change-Id: I5aae8cbc050187b1adf7757b112470a8e9e6160e

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