drawingML export: write TextShape fill properties

Change-Id: Ibe89e86b19d7633e9a0669ff0574173ac4b633c5
drawingML export: fix TextShape width for DOCX

Change-Id: Ibaf29ed746076fa6ec0bad013cac26debdb2b165
drawingML export: write TextShape outline properties

Change-Id: I3742c960016bbe1d82b58a16d464b329d2612c10