Coherent behavior for all collection slice and indexing operations.

o All relevant operations - head, tail, last as well as bracket-syntax indexing
   ([x] and [x..y]) now return null for out-of-bounds operations.
Cleanup of internal classes that should not be publicly documented.

o Moves all publicly documented internal classes added in 2.0 to internal packages.
o Deprecates all publicly documented internal classes added before 2.0.
Update Cypher test dependencies

o ScalaTest_2.10 2.0 has been released
o Add ScalaUtils_2.10 2.0 (=== operator now lives in separate artifact)
o Add ScalaCheck_2.10 1.11.0 (we want to work with it)
Adds trace logging statements during election and cluster join/leave.

This is a temporary commit, because we need the execution powers of the CI
 system which seems capable of reproducing some edge case failures. After this
 task is done it should be reverted and if prudent, polished and reapplied.
Share code for scanning through stores.

o Introduce BoundedIterable.
Merge pull request #1420 from boggle/master

Update Cypher test dependencies
Consistency checker: multi-pass processing for label scan store and indexes.
Consistency checker: delegate incremental checking to full checking.
Merge pull request #1424 from apcj/2.0-ccheck-multi-pass

2.0 ccheck multi pass
Fix bug in TxLog handling of null-bytes in log files
Refactor and clean up TxLog

There is still more that can be done, but hopefully it is now a little more readable and
in line with our house style. The parsing could for instance be split out into its own
class.
Merge pull request #1410 from systay/collection-out-of-counds

Coherent behavior for all collection slice and indexing operations.
Merge pull request #1416 from jakewins/deprecate-incorrect-packaged-things

Cleanup of internal classes that should not be publicly documented.
Organise imports.
Merge pull request #1427 from chrisvest/fix-tm-log-duplicates

Fix tm log duplicates