Fix command for retrieving filters.

Python raised this before:
> AttributeError: 'LightPathI' object has no attribute 'copyEmissionFilters'
Print Dichroic information.

Previously, the dichroic object was retrieved and ignored. ;)
Check if there was an actual Dichroic object returned.
Fix the dichroic type check.
Fix wrong indenting.
Update develop submodules

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

Repository: openmicroscopy/bioformats
Updating 8166648..c81b9ec
Merged PRs (fast-forward):
  # PR 965 melissalinkert 'Add a few more things to the 5.0.0 version history (rebased onto develop)'
  # PR 956 sbesson 'Final BF doc updates for 5 release (rebased onto develop)'
  # PR 954 melissalinkert 'Fix ImageScope links to match the committed documentation (rebased onto develop)'
  # PR 961 melissalinkert 'Update autogen scripts and templates for restructuring (rebased onto develop)'
  # PR 963 mtbc 'change TeX Gyre font package so XeLaTeX can find it (rebased)'
  # PR 949 rleigh-dundee 'C++ fixes to work around clang++/libc++ bugs'
  # PR 945 rleigh-dundee 'cpp: bioformats: Add MetadataMap class for original metadata'

Repository: ome/scripts
Already up-to-date.

Repository: openmicroscopy/ome-documentation
Updating 40ecbfe..3689d53
Merged PRs (fast-forward):
  # PR 681 sbesson 'Document Homebrew formula upgrade to 5.0.0 (rebased onto develop)'
  # PR 689 mtbc 'change TeX Gyre font package so XeLaTeX can find it (rebased)'
  # PR 688 sbesson 'Fix links to Bio-Formats source code post-renaming'
  # PR 687 jballanc 'Updated section on search re-indexing (see #11995) (rebased onto develop)'

Generated by OMERO-5.1-latest-submods#46 (http://ci.openmicroscopy.org/job/OMERO-5.1-latest-submods/46/)
No fileAnnID in Metadata.py

BlitzGateway.loadOriginalMetadata always returns a None for
the first element of `om` for all data newly imported in OME5
since no extra file is created.
Merge pull request #2145 from snoopycrimecop/merge/develop/submodules

Regularly scheduled submodules bump
Merge pull request #1 from joshmoore/niko-fix

No fileAnnID in Metadata.py
Merge pull request #2146 from imcf/develop

Bug fix and improvement for the Metadata.py example.