RavenDB-1754 Collection was modified server exception on concurrent patches on the same doc
RDBQA-6. Smuggler: throw exception when database does not exist
Merge branch 'RavenDB_1754' of https://github.com/ml054/ravendb
RavenDB-1761 Date facets failing test
Merge branch 'RavenDB-1761' of https://github.com/ppekrol/ravendb