Add 'fixpyramids' command to admin.py

'bin/omero admin fixpyramids' will now remove any 0-length pyramid files
that do not have a corresponding lock file or temp file.  This allows
administrators to force regeneration of pyramid files that could not be
created before (e.g. due to OOMs as a result of the server
configuration).

See ticket #11395.
Refactor fixpyramids to act more like cleanse
Refactor to use os.walk
Update develop submodules

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

Repository: openmicroscopy/bioformats
Updating 709737f..b7bfd97
Merged PRs (fast-forward):
  # PR 744 hflynn 'Adding 4.4.9 to version history (rebased onto develop)'
  # PR 741 rleigh-dundee 'cpp: xerces: Correct case of class names'
  # PR 743 melissalinkert 'Maven: add Wagon extension to fix deployment'
  # PR 742 melissalinkert 'ImageConverter: only call setSeries on non-negative values (rebased onto develop)'
  # PR 738 rleigh-dundee 'cpp: model Timestamp: Use char_traits<> for end of file'
  # PR 730 rleigh-dundee 'cpp: Add bioformats component (build infrastructure and BaseMetadata)'
  # PR 737 melissalinkert 'Maven: add missing distributionManagement block'
  # PR 736 melissalinkert 'bfconvert: fix conversion of individual series (rebased onto develop)'
  # PR 679 LeeKamentsky 'Multi-plane flex file with factor and no compression only reads first pl...'
  # PR 635 melissalinkert 'Use jgit-buildnumber to set version information in Maven'
  # PR 726 hflynn 'Fixing broken links in BF doc build (rebased onto develop)'
  # PR 724 rleigh-dundee 'cpp: Generate and compile model enums'
  # PR 723 rleigh-dundee 'cpp: Add doxygen API reference'
  # PR 722 melissalinkert 'ImageConverter: fix dimensions of the last tile (rebased onto develop)'
  # PR 715 rleigh-dundee 'Initial C++ implementation'
  # PR 721 melissalinkert 'ND2: only populate the channel color if it is non-zero (rebased onto develop)'
  # PR 708 melissalinkert 'Metamorph image names (rebased onto develop)'
  # PR 720 mtbc 'fix SimplePCI links in documentation (rebased onto develop)'
  # PR 718 melissalinkert 'Data tests: adjust memory calculations based upon thread count'

Repository: ome/scripts
Updating 4b232cc..d7a0feb
Merged PRs (fast-forward):
  # PR 51 will-moore 'Combine images param unwrap 11473 develop'
  # PR 52 sbesson 'Export big images as jpeg 10841 dev 4 4 (rebased onto develop)'

Repository: openmicroscopy/ome-documentation
Updating 0d4717a..e123254
Merged PRs (fast-forward):
  # PR 514 bpindelski 'Fix broken links after script forum removal.'
  # PR 509 sbesson 'Fix broken pg_dump command (rebased onto develop)'
  # PR 502 manics 'Fix list of Annotations (rebased onto develop)'
  # PR 505 joshmoore 'Script sample gh 470 (rebased onto develop)'
  # PR 506 dpwrussell 'Ldap filters'
  # PR 501 hflynn 'Pdf images resizing (rebased onto develop)'
  # PR 499 hflynn 'Database backup warning'
  # PR 498 hflynn 'Script docs image rescaling (rebased onto develop)'

Generated by OMERO-submods-develop#220 (http://hudson.openmicroscopy.org.uk/job/OMERO-submods-develop/220/)
minor README edits for UI testing
add detailed matching for tree path finding
add keyword for checking thumbnail border color
add Insight UI test for selection synchronization
add tiny blank images to test repository
import new tiny images for UI testing
add Insight UI tests for thumbnail rendering
Merge pull request #1579 from snoopycrimecop/merge/develop/submodules

Update develop submodules
Merge pull request #1608 from sbesson/rebased/develop/11395-fixpyramids

11395 fixpyramids (rebased onto develop)
Merge pull request #1635 from mtbc/insight-ui-image-tests-11446

fix #11446: add robot framework scripts for testing the Insight data browser (rebased)
Fix flake8 output for CLI admin plugin
Fix flake8 output for CLI basics plugin
Fix flake8 output for CLI cecog plugin
Fix flake8 output for CLI chgrp plugin
Fix flake8 output for CLI db plugin
Fix flake8 output for CLI delete plugin