Update submodules
Merge pull request #798 from snoopycrimecop/merge/dev_4_4/submodules

Update submodules (dev_4_4)
Blitz getThumbnail(direct=True) uses direct methods by default
webgateway render_thumbnail() uses img.getThumbnail(direct=False)
Fix comment markers in TestNG XML files
Fix classpath for unit tests in omero-common
Merge pull request #788 from bpindelski/utils-refactor

Add ChecksumProvider class substituting Utils
Added test to check string lengths are validated
Return error if string column width not specified #9971
Return an error if input string longer than column width #9971

Technically an API change, previous behaviour was to silently truncate string.
Add test to check an error is returned by addData on uninitialised table
Check table has been initialised before reading/writing #10431
Improve name of test method
Add Wrapper class for callback objects to make sure they are properly closed when no longer needed
Add plate to the supported type.
Add Java doc.
Add test for plate type.
Replace assertTrue by assertEquals
merge dev_4_4 -D org -I include -E exclude: PR 558 (Plugin dependencies)
merge dev_4_4 -D org -I include -E exclude: PR 620 (Spec clean on dev 4 4)