jsTree 'cut' also does 'remove'. See #11882
Remove 'Remove/unlink' from jsTree
Renaming 'Copy/Cut/Paste Link' See #11881
Toolbar 'Cut Link' also removes from tree
Set default socket timeout correctly (Fixes #12097)

Python socket timeouts are specified in seconds as floating point.  This
commit sets the default timeout to a more reasonable 3 seconds, allows
the specification of a floating point timeout value, removes the
assumption that the timeout is specified in milliseconds and documents
all of the aforementioned.
Support for configuring the upgrade check URL (See #12097)

This commit adds configurability to the upgrade check URL via the
OMERO.web configuration mechanism.  Upgrade checks in OMERO.web can now
be disabled by running:

    bin/omero config set omero.web.upgrades_url ''
Initial working Java MapField
Nearly working c++ map type
Work-around c++ std::map copy semantics

For the moment, getConfig and setConfig are a bit
surprising since the std::map is being passed by
value rather than reference.
Passing Python test
Use existing "omero.upgrades.url" configuration option
Close the RFS and kill the root session.
Bugfix: Weird behaviour after switching users

After switching user new service adapater instances were created but never
passed on to the registry.
Update copyright header.
Updated copyright date
jquery-ui custom images cleanup
Check for duplicate pixels IDs when adding to list.
jquery-ui cleanup:
 - adding README file and few others from the original package
 - removing themes/flicker
panojs css cleanup
webgateway css cleanup