Chgrp dialog form tidy. **Backport to dev_4_4
Chgrp dialog checks for split Fileset, adds 'Move All'
Delete dialog checks for split Fileset, only allows 'Cancel'
On chgrp, show MIF warning *before* target tree chooser
Adding 'None' params to getImagesBySplitFilesets()
Select & remove extra MIF images on 'Move All' dialog
Only select Fileset on chgrp of 'image'
Layout adjustment.
Fix cancellation of single import (see #10996)

The problem occurs when importing a folder.
User Capital letter.
Reset the menu to null (see #11007)
Clear toolbar after switch. (see #11025)
Fix issue with sequence of import (see #11001)
Remove System.err.println
Use full omero.version to generate the ova name
script_utils.getObjects() sorts by IDs
Fix multi-selection in data manager (see #11037)
Merge pull request #1239 from sbesson/rebased/develop/virtualbox_omero_version

Use omero.version to generate the ova name (rebased onto develop)
Blitz getThumbnail(direct=True) uses direct methods by default
webgateway render_thumbnail() uses img.getThumbnail(direct=False)