Minor: refactoring OIndexProxy
Fixed: Involved indexes metric when index chain is used (Issue #1744)
Refactoring: more specific name for OChainedIndexProxy (old: OIndexProxy)
Fixed preprocessing null composite keys
OLinkSerializer: fixed null value preprocessing
Index: fixed get value by null key
Fixed issue #1793 + removed old replication commands in console and OSrvAdmin
Merger
Delete not English comments
Fix server scripts
Switch to 1.6.1: added last studio as plugin, now ant install creates the "GratefulDeadConcerts" database
Updated Blueprints libs
Improved build script
Fixed issue #1832 about fetching MAP with non document links
Deleted deprecated graph scripts
Cleaned scripts
Merge branch 'hotfix-1.6.1' into develop
Switch to 2.0-SNAPSHOT