Added more logging for debugging

Added tests for proving successive write/read bug

Added TRACE logging configuration for graph tests
Refactored edge writes and delete.

Refactored consistency config into common
Fixed issue with meta repair on edge delete
Merge remote-tracking branch 'origin/two-dot-o' into USERGRID-107
Fixed bugs and upgraded to rx java 0.18.3
Fixed bugs with race condition writes in the graph module.  Uses a timeUUID during write (and delete) events in columns to keep total ordering correct, even if event processing is slow.
Rollback accidental rule commit