Observable classes has been removed

[jensli]

Hello, Elexis project!

By doing a code search on GitHub I found that your project uses the class org.eclipse.core.databinding.beans.PojoObservables. This class and other observable factory classes have been deprecated for removal for a long time.

I write to give you a heads up that these classes have now finally been removed and will not be available in future releases of the Eclipse platform.

To avoid problems when running of future Eclipse versions uses of those classes have to be replaced by the different property factory classes, for example org.eclipse.core.databinding.beans.typed.PojoProperties.

For more information, see this merge request on the Eclipse platform: eclipse-platform/eclipse.platform.ui#323