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
Updated baseline

Change-Id: I40ea7f18d7023dc04af77343a3f0564e640b2c44
Updating another baseline

Change-Id: Id737a02209462c18494022d301b33c0350deb7e5
Merge topic 'widen_properties_panel' into next

a9f7af8b Updating another baseline
017472d8 Updated baseline
fab9daf6 Updated baselines
262f0d10 Give a size hint to widen the pqPropertiesPanel