merge develop -D org: PR 1960 (Remove cut link 11882)
merge develop -D org: PR 2127 (Working view to email announcements to selected users, groups, email addresses and/or all users)
merge develop -D org: PR 2160 (Warning dialog before deletion of linked images)
merge develop -D org: PR 2165 (Inplace file path)
merge develop -D org: PR 2182 (Read only flag)
merge develop -D org: PR 2188 (Close the RFS and kill the root session.)
merge develop -D org: PR 2204 (Workaround for Java 7 bug)
merge develop -D org: PR 2207 (Implemented maximum file size limit for import)
merge develop -D org: PR 2229 (Webclient 'Apply owner's rdef' see #12044)
merge develop -D org: PR 2235 (customizing 'Orphaned images' container)
merge develop -D org: PR 2237 (fix #11965: join images to plate runs for leaf queries (rebased from dev_5_0))
merge develop -D org: PR 2240 (Search image id 12151)
merge develop -D org: PR 2243 (omeroweb flake8 cleanup: unused imports)
merge develop -D org: PR 2244 (Webstart access limited)
merge develop -D org: PR 2248 (Update develop submodules)
merge develop -D org: PR 2249 (omeroweb flake8 cleanup: Remove unused variables)
merge develop -D org: PR 2251 (omero gateway flake8 cleanup: Fix failures and warnings)
merge develop -D org: PR 2253 (limit webtest getObjects() to 10)
merge develop -D org: PR 2254 (Remove Empty menu. (see #12157) (rebased onto develop))
merge develop -D org: PR 2255 (document %groupId% for omero.fs.repo.path (rebased))