Add planeInfo=true support to FakeReader

In order to investigate recent connection lost issues, being able
to generate a large number of plane info objects and insert them
into OMERO would be useful.

See: https://www.openmicroscopy.org/community/viewtopic.php?f=5&t=7351&start=20
merge dev_4_4 -D org -I include -E exclude: PR 746 (CellWorx: ignore thumbnails and missing channel names)
merge dev_4_4 -D org -I include -E exclude: PR 795 (Add planeInfo=true support to FakeReader)