fixing issue RavenDB-1837: etag(in the form of If_none_Match header attribute) is not being sent upon save document
issue  RavenDB-1575: implement CreateSampleData
Merge branch 'New3' of https://github.com/fitzchak/ravendb into New3
issue RavenDB-1575: implement create sample data
Merge branch 'New3' of https://github.com/fitzchak/ravendb into New3
Merge branch 'New3' of https://github.com/fitzchak/ravendb into New3