Update references to docs.neo4j.org to point to neo4j.com/docs.
Fix flaky test in TransactionIT closing socket to terminate transaction.

The test will now allow some time for the socket closing to propagate
network stacks and actually have an effect. It is a speculative fix.
Ability to control maximum number of processors used during import

also made terminology and doc around processor vs. thread in the context
of the importer more clear and consistent.
Add test and fix issue with concurrent drop and usage of legacy index.

Legacy index creation and deletion is not transactional, but its availability
was treated as such during the commit to store phase. If a particular index cannot
be found then it has been deliberately removed and thus any changes to it should
be directed to the bitbucket.
Merge pull request #3611 from martinfurmanski/2.2-transaction-it-closing-socket-should-terminate-transaction

Fix flaky test in TransactionIT closing socket to terminate transaction.
Merge pull request #3613 from tinwelint/2.2-import-specified-max-threads

Ability to control maximum number of processors used during import
Some small grammar fixes in the docs
Incorrect grammar in assertion for tx resume
Merge pull request #3615 from craigtaverner/master

Small grammar fixes in docs and assertions
Merge pull request #3601 from martinfurmanski/2.2-legacy-index-concurrent-drop

Add test and fix issue with concurrent drop and usage of legacy index.
Merge pull request #3604 from nawroth/docs-neo4j-org

Update references to docs.neo4j.org to point to neo4j.com/docs.