by default

Changes for the databinding plug-ins.

Settings removed for
org.eclipse.core.databinding.observable
org.eclipse.core.databinding.property

To all other databinding plug-ins changed to the shorter from using
properties.

Change-Id: Ie627ed6cbb82fc6b157e7c5e5154d2326893d55a
Signed-off-by: Lars Vogel <Lars.Vogel@vogella.com>