support to Koren's neighborhood and integrated models
Deleted recommender tracked by other branch
Previous modifications which is now on other branch

Previous modifications which is now on other branch

support to Koren's neighborhood and integrated models

Deleted recommender tracked by other branch
Merge branch 'korens' of https://github.com/mmanzato/MyMediaLite into korens
Changes according to Zenos remarks
Merge branch 'master' into korens

Conflicts:
	src/MyMediaLite/MyMediaLite.csproj
	src/MyMediaLite/RatingPrediction/GSVDPlusPlus.cs
Changed to reduce memory usage
Fixes from the last commit which was making the processing very slow
Merge branch 'korens' into recsys
Model used to evaluate against KorenImplicitKNN and multiple K