ExporterI: set tile size for exported files to 128x128

This prevents the OME-TIFF writer from writing each row of pixels as a
separate strip, which should improve performance upon re-importing the
exported file.

See ticket #11850.
Disable concurrent Quartz scheduling of indexing  (see #11945)

With Quartz concurrency enabled, the indexer appears to be getting stuck
in a deadlock when one or more thread experiences an OOM error. Since,
currently, only one thread can index at a time anyway this disables
concurrency in Quartz as a workaround.
Update dev_5_0 submodules

Repository: openmicroscopy/openmicroscopy
Already up-to-date.

Repository: openmicroscopy/bioformats
Updating a201774..92e346e
Merged PRs (fast-forward):
  # PR 871 melissalinkert 'Fix tiled TIFF reading and writing'
  # PR 867 melissalinkert 'Ignore text nodes when parsing XMLAnnotation's value (rebased onto dev_5_0)'
  # PR 873 melissalinkert 'Switch from net.imagej:ij to gov.nih.imagej:imagej'
  # PR 877 hflynn 'Updating TILL Photonics website link'
  # PR 860 melissalinkert 'UpgradeChecker: fix the stable version number'
  # PR 869 sbesson 'Update CI build names to point at the latest Bio-Formats jobs'
  # PR 864 melissalinkert 'Make sure that the configuration file suffix is propagated to subdirs'

Repository: ome/scripts
Updating d2b3bd8..12cb664
Merged PRs (fast-forward):
  # PR 63 manics 'Use fromstring() instead of fromarray() #11912 (rebased onto dev_5_0)'

Repository: openmicroscopy/ome-documentation
Already up-to-date.

Generated by OMERO-5.0-latest-submods#299 (http://ci.openmicroscopy.org/job/OMERO-5.0-latest-submods/299/)
Initial commit to replace menu by Checkbox menu.
Add option to add all the users.
Add/remove users to tree.
Allow to remove logged-in user from the display.
Enabled selection if no user displayed.
Add selection icon.
Do not allow group selection in user view.
Review the group menu in group display view.
Replace 16x16 icon by 8x8 icon.
Do not visit the browser when groups >1.
Fix selection of users in menu.
Remove the last group.
Make the group menu selectable.
Modify controls used to display groups/users menu.
Handle user in only one group.
Display data in group view when user in one group only.
Remove unused imports.