AliNDFunctionInterface: allow one tree for classification separated by cuts.

Merge pull request #779 from miranov25/master

#ATO-445-TMVA regression (NON BACK COMPATIBLE CHANGE) + classification (ADD)

#ATO-445 - TMVA regression and classification wrapper

* new interface for regression = possibility to specify output

Merge pull request #776 from miranov25/master

# ATO-448- (pull 776) Temporary disable key map checks

Merge pull request #777 from fprino/master

Move bit for fixed cascades to AliAODcascade

Flag to control if the issue with on-fly cascades is fixed or not

Skip on-fly V0 in cascade loop

Suggestions by Ruben to speed-up

FixCascade method added in AliAODEvent

Merge pull request #55 from bdrum/master

ATO-418: AliDrawStyle, AliPainter, AliParser