Change in bucket generator (Breaks indexes), to improve mapreduce indexing speed by grouping sequential elements closer in buckets
Avoid extra do loop when reducekey already is done
Merge branch 'master' of https://github.com/steinho/ravendb.git
Merge branch 'master' of git://github.com/steinho/ravendb into 2.1

Conflicts:
	Raven.Database/Indexing/IndexingUtil.cs
	Raven.Database/Storage/Esent/StorageActions/MappedResults.cs