Close ImportProcessPrx instances (Fix #12233)

Once upload is completed, the import process instance should
be closed. The `HandlePrx` which is returned will continue
functioning.
Use dsFactory.getLogger in OMEROGateway
Delete superfluous READMEs
Making 1 README in /examples at top level
remove TEST sql scripts
BlobShareStoreTest: Add Ice 3.5 blob
Set the compression to high if large plane.
Update header
Improve error message on missing lib/scripts (Fix #9785)

Now when lib/scripts is deleted or removed, a more appropriate
error message is thrown. The server, however, won't start up
in this condition, and any attempt to read the directory results
in an `InternalException`.
Update Ice URLs
Merge pull request #2416 from mtbc/remove-test-dirs

remove TEST sql scripts (rebased from dev_5_0)
Merge pull request #2413 from joshmoore/rebased/develop/12233-close-importproc

Close ImportProcessPrx instances (Fix #12233) (rebased onto develop)
Don't use rstring on null values.

This change checks first if the arguments passed
to rstring are null. If so, it stores them as null
values instead of empty strings, which can later
invalidate valid strings.
Use null check instead of isNotEmpty().
Merge pull request #2414 from hflynn/rebased/develop/READMEs

Delete superfluous READMEs (rebased onto develop)
Merge pull request #2419 from joshmoore/rebased/develop/9785-list-scripts

Improve error message on missing lib/scripts (Fix #9785) (rebased onto develop)
Merge pull request #2417 from jburel/rebased/develop/compression-level-size

Compression level (rebased onto develop)
script_utils.py (parseInputs): "un"require/deprecate input argument `session'.

Function omero.util.script_utils.parseInputs requires the session as one of the
of the input arguments. However, this argument was actually never used by the
function. Deprecate by defaulting to None.
Scroll menus.
Remove imports.