foam.u2.RelationshipView: Update label style to match property labels.
foam.u2.RelationshipView: Update label style to match property labels.

foam-framework/foam,foam-framework/foam,jlhughes/foam,jlhughes/foam,jlhughes/foam,foam-framework/foam,jlhughes/foam,foam-framework/foam,foam-framework/foam