Removes log statement in NetoworkSender that spammed the log

When attempting to open a channel towards a non listening socket, on
 failure channelClosed() will be called for that channel. However, the
 expected channelOpened() call will not have happened, so NetworkSender
 will not have registered an association between the URI and the Channel.
 channelClosed() will then try to look that up and consider its absense
 an error. That is apparently not correct.
Renames NetworkSender.MessageSender to NetworkSender.NetworkMessageSender

org.neo4j.cluster.com.message.MessageSender kept being imported by
 IntelliJ on any bracked removal, which was annoying. This little rename
 prevents that behaviour.
Makes cypherdoc commit each query separately so constraints and indexes can be handled.
Brings in resizing of the live console.
Adds an introduction page on labels, indexes and constraints.
Remove unnecessary code from HaBeanIT
Revisits logging in ElectionState and ClusterConfiguration

Commit 956dc3e1a8edd91a2a3710e2c71326b16a849de7 added some extra
 logging in ElectionState and ClusterConfiguration in order to hunt
 down a bug. It turns out this logging is useful to keep in production
 too. This commits sets proper levels, cleans it up a bit.

Cleans up some superfluous casts that appeared in the code.
Merge pull request #1459 from jakewins/merge

Merge 1.9
Revert "Added additional HA logging."

This reverts commit 9da8386a42b0d8554346d744df1052ac75703f07.
Merge pull request #1473 from jakewins/master

Revert "Added additional HA logging."
Add missing test strings to label tutorial.
Make OtherThreadExecutor implement Closeable to make orderly thread
shutdown easier.

o Callers can now use try-with-resources.
Make NestedTransactionLocksIT more readable.
Ensure that all tests close transactions reliably.

o Recent changes to database shutdown mean that we now wait for transactions
   to finish when shutting down. This mean that each of the many tests which did
   not close their transactions was hanging for 20 seconds before failing.
Merge pull request #1463 from chrisvest/fix-impermanent-graph-db-cleanup

ImpermanentGraphDatabase.cleanup should delete all nodes
Merge pull request #1462 from simpsonjulian/goodbye-msi

Remove MSI installer
Rename the GCR Cache to High-Performance Cache
More robust shutdown of sub processes.

o Make PipeTask correctly handle end of input streams.
o Un-export RMI callback so that RMI Reaper thread can exit on owning process.
Merge pull request #1472 from digitalstain/election-logging

Revisits logging in ElectionState and ClusterConfiguration
Added more information about the refnode deprecation. Point to the correct live console server.
Revert "Revert "Added additional HA logging.""

This reverts commit 9950dc2c92ab7fa71b3be32026fb37f56cd64e08.
Resolve incorrectly merged paxos lifecycle management.

o Re-introduce the paxoslife that was removed as part of the merge conflicts.
o Resolves a race condition in which the cluster would hang during switch to slave in
  some alignments of stars.