Reset count if an Interface is dropped.
Merge pull request #1970 from joshmoore/rebased/develop/_event-removal-4.4

event removal 4.4 (rebased onto develop)
Refactor TestPolygon/TestPolygon unit tests to use helper class
Add failing tests for createPolygon/createPolyline with column input
Fix createPolygon/createPolyline for column vector input
Replace isReachable by URL.
Remove print.
Check network every 5s instead of 8s
merge develop -D org -I include -E exclude: PR 1838 (Connection)
merge develop -D org -I include -E exclude: PR 1905 (Add append/remove subcommands to `bin/omero config`)
merge develop -D org -I include -E exclude: PR 1910 (assist #11675: do not assume sun.nio.ch.DirectBuffer)
merge develop -D org -I include -E exclude: PR 1912 (fix #11094: unify preprocessor test classes)
merge develop -D org -I include -E exclude: PR 1913 (Add 'omero web restart' command for convenience)
merge develop -D org -I include -E exclude: PR 1914 (Add missing parenthesis in omero web help text)
merge develop -D org -I include -E exclude: PR 1915 (fix #11577: have checksum provider list available hashers)
merge develop -D org -I include -E exclude: PR 1916 (Fileset examples fixes 11852)
merge develop -D org -I include -E exclude: PR 1924 (fix #10822: add "local" options to omero.fs.repo.path_rules)
merge develop -D org -I include -E exclude: PR 1925 (Americanization of some UI strings in Insight)
merge develop -D org -I include -E exclude: PR 1926 (big_image_link_xy_11844)
merge develop -D org -I include -E exclude: PR 1927 (fix minor typo in web client)