[server/test] don't leak timeout from one test class to the next Reset SQL_CONNECT_HOOKS after we're done with this test class so the next one doesn't inherit a timeout it doesn't want.

[server/test] CWAttribute.extra_props is Bytes

[dataimport] give unicode objects to psycopg2 copy_from

[dataimport] extid must be a bytes object

[dataimport] import StringIO from io

[dataimport] fix ucsvreader for python3 The csv module in python3 wants str, so use a StreamReader to feed csv.reader and don't decode the output

[server/test] import StringIO from io on python3 Don't change the import for python2, as we print a mix of unicode and str.

[server/datafeed] drop URLLibResponseAdapter.info I don't know where it's used

[devtools] pass a key to sort() method python3 dicts are not comparable

[postcreate] properly set is_instance_of for bootstrap entities Entities created before CWEType itself need the is/is_instance_of relations created later. We were actually only inserting "is". Closes #7656606.