Delete projected image

Not directly related to https://trac.openmicroscopy.org.uk/ome/ticket/10262

But necessary to test the deletion of projected image, source image etc.

To test
 * Run ```./build.py -f components/tools/OmeroJava/build.xml test -DTEST=integration/delete/DeleteProjectedImageTest```

This will probably take around 4mins. (40 tests, image is projected)