Minor UX fixes to the create index story
cypher: CREATE UNIQUE label support
Acceptance testing related fixes to manual and manual build

o Updates doctools to version 4
o Small rewording in manual
Merge pull request #506 from boggle/acceptance-manual

Acceptance testing related fixes to manual and manual build
Adds UNION to Cypher
Updated docs, added support for shorthand OR in WHERE clause
Integrated and working solution for storing node labels on the node record
itself. If the in-record space isn't enough it will spill over to a
dymamic array store dedicated for node labels.

This change increases the store format version as well as the logical log
version, but migration isn't supported yet.
Javadocs on store migration