Removed commit log logic temporarily.  Revert this commit to restore it later.
Replaced generic RuntimeExceptions with GraphRuntimeExceptions
Merge remote-tracking branch 'origin/two-dot-o' into USERGRID-154

Conflicts:
	stack/corepersistence/graph/src/main/java/org/apache/usergrid/persistence/graph/impl/GraphManagerImpl.java
Initial implementation of counters.  Need to look at changing the counting implementation internally to avoid read/write locks.
Removed mockito to avoid OOM during tests.

Fixed fallback with hystrix to retain counts

Rolled Hystrix version back to 1.3
Implemented shard count persistence.
Removed count min counters.  They aren't easily distributed for concurrent counting.
Added shard counting when serializing edges
Fixed local consistency issue during long flushes.
Merge pull request #239 from usergrid/USERGRID-154

Usergrid 154