OmeroCpp: Test fixture exports new_ImageI

This is needed by the integration and unit tests.
OmeroCpp: RTypesI exports all RType operators
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2835 (Update OmeroPy/src/path.py)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2895 (Reload groups after users added/removed)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2926 (OmeroCpp: Glob test sources)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2927 (OmeroCpp: Glob example sources)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2965 (blitz: Split RObject out of RTypes)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2970 (Bugfixes for 5 0 4)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2979 (Thumbnail cache busting)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2982 (Fix #12530: detect Windows if closing RFS.)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 2994 (Ensure that identity request variables are UTF-8 encoded)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3004 (Update webadmin_utils.py with downloads.o.org link instead of trac.o.org )
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3009 (Add a disk usage plugin)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3010 (cmake: Use embedded gtest from bioformats)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3012 (Flake8 omero/util)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3015 (Improve pixel data log handling)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3018 (Update develop submodules)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3019 (refactoring settings.py)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3020 (adding web settings parser)
merge develop -Dorg -Ijburel/openmicroscopy:qa-submit-new -Ssuccess-only: PR 3021 (FindIce: Remove unneeded search path modification)