merge dev_5_0 -D org: PR 1188 (AFI: populate magnification and physical pixel size metadata (rebased from develop))
merge dev_5_0 -D org

Repository: openmicroscopy/bioformats
Updating 603bedc..e598e14
Merged PRs (fast-forward):
  # PR 1186 melissalinkert 'CZI: prevent NumberFormatExceptions on missing/invalid position values'
  # PR 1183 melissalinkert 'OME-TIFF: close helper readers when working with single-plane files'
  # PR 1182 melissalinkert 'Nikon .nd2 fixes, part 3'
  # PR 1180 melissalinkert 'Ignore namespaces when filling in an XMLAnnotation's Value (rebased onto dev_5_0)'
  # PR 1172 melissalinkert 'Inveon: ignore the absolute path to the image file (rebased onto dev_5_0)'

Merged PRs:
  # PR 1188 mtbc 'AFI: populate magnification and physical pixel size metadata (rebased from develop)'
Generated by OMERO-5.0-merge-push#83 (http://ci.openmicroscopy.org/job/OMERO-5.0-merge-push/83/)