Training java

Modify examples using a configuration files or by editing parameters in each class

To test 
 * Modify the values in ```config/training.config```  e.g.
```
 omero.hostname=howe.openmicroscopy.org.uk
 omero.username=user-1
 omero.password=ome
 omero.imageId=1355
 omero.datasetId=51
 omero.plateId=51
 omero.plateAcquisitionId=51
 omero.projectId=51
```
 * run setup class.

The configuration will be modified/replaced later on when all examples are ready