Give a size hint to widen the pqPropertiesPanel

Start out a little wider to show all the controls in the properties
panel.

Change-Id: I73061fc2fd583cd85f37138733fe299b62734b6d
Updated baselines

Change-Id: Ie41434ef1298a19164801efd5ad70de9b1061834
Merge topic 'widen_properties_panel' into next

fab9daf6 Updated baselines
262f0d10 Give a size hint to widen the pqPropertiesPanel