Ignore metadata files with a .tif/.tiff suffix

Some Prairie datasets contain "OME-TIFF" files with a BinaryOnly entry
that points to a different "OME-TIFF", which is not valid.
Merge pull request #1091 from melissalinkert/mrc-pixel-type

MRC: fix handling of mode 16 data
Deprecate download_components in favor of downloads extlink
Point at other artifacts  directly using the downloads extlink
merge dev_5_0 -D org: PR 1078 (Lots of Zeiss CZI fixes)
merge dev_5_0 -D org: PR 1080 (Exclude log4j and packages from target-test-runner)
merge dev_5_0 -D org: PR 1090 (Add initial support for reading BinaryOnly OME-TIFF datasets)
merge dev_5_0 -D org: PR 1093 (BF docs: Jenkins cleanup)
merge dev_5_0 -D org: PR 1094 (Imaris HDF: make sure that all resolutions have the same ZCT sizes)
merge dev_5_0 -D org

Repository: openmicroscopy/bioformats
Excluded PRs:
  # PR 1095 melissalinkert 'Fix memo file path creation on Windows' (status: pending)
Already up-to-date.

Merged PRs:
  # PR 1078 melissalinkert 'Lots of Zeiss CZI fixes'
  # PR 1080 melissalinkert 'Exclude log4j and packages from target-test-runner'
  # PR 1090 melissalinkert 'Add initial support for reading BinaryOnly OME-TIFF datasets'
  # PR 1093 sbesson 'BF docs: Jenkins cleanup'
  # PR 1094 melissalinkert 'Imaris HDF: make sure that all resolutions have the same ZCT sizes'

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