Delete projected image (rebased onto develop)



This is the same as gh-1586 but rebased onto develop.

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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)