fixed cypher example errors in guide; added styled nav arrows to front page of guide
Fixes problem where predicates are not honored at the end of paths
Merge pull request #776 from systay/traversalmatcher-predicates

Fixes problem where predicates are not honored at the end of paths
Speed increase on startup in presence of many RelTypes

On bulk RelType import that happens on startup, instead of using the
 COW map and insert one by one, store all derived data in local Maps
 and addAll() those to the COW in one operation. Equally thread safe
 and much faster.
Merge pull request #765 from akollegger/guide-fixes

Guide fixes
Merge pull request #782 from digitalstain/fast-reltype-load

Speed increase on startup in presence of many RelTypes
Updates changelogs for 1.9 GA
Updates documentation with proper ExecutionResult hygiene
Some cleanup of exception messages