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