RavenDB-1557 Avoid allocations in client side  - test
Merge branch 'RavenDB_1557' of https://github.com/ml054/ravendb into New3
RavenDB-1402 /debug/request-tracing endpoint
RavenDB-1548 NRE in RavenFS. Indeed it could happen when transactional storage was already disposed and Batch() completed immediately without a call of a passing action.
Merge branch 'RavenDB-1548' of https://github.com/arekais/ravendb into New3
Merge branch 'RavenDB-1402' of https://github.com/arekais/ravendb into New3