drawingml import: handle wps:bodyPr inside a groupshape

Change-Id: I1f059ae653ab13a7c867f77b2b1b4265e9e71b4e
drawingml import: handle w:b (found in docx groupshape textboxes)

Change-Id: I105d068a6b8d454fac963cd30f6f812cf2b96170