NF: RandomClassifier (Random and RandomSame in warehouse)

Primarily for testing or to quickly check if there is no inherent
problems with the method (e.g. double-dipping)
BF: adjusting __tags__ and tests for fresh bleeding edge Random Classifier which now also provides estimates
Merge pull request #207 from yarikoptic/enh/random_clf

NF: RandomClassifier (Random and RandomSame in warehouse)