QmlDesigner.PropertyEditor: adding FlickableSpecifics

Change-Id: I62023cf60ced20378a63746677abf22dff3651c0
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
QmlDesigner.PropertyEditor: adding GridViewSpecifics

Change-Id: I93f64fed7341f463379dbb790e28f0f7c5d9d65b
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>
QmlDesigner.PropertyEditor: adding GridViewSpecifics

Change-Id: Ia7e48287f833953ae21323658d69ec174fa1d6b2
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@digia.com>