Made a general review to fix as possible most coding conventions violations.

Made a general review to fix as possible most coding conventions violations.

Reorganized section of macros:
- "macros/test"     contain some test macros for stand-alone runs
                    useful for developers
- "macros/train"    contain all required macros for train runs
- "macros/tutorial" will contain tutorial macros to learn to use package

Added a new AnalysisTask object: AliAnalysisTaskEffSE,
which makes use of AliCFContainers to make efficiency computations for corrections
using the internal structure of RSN package to define cuts of all selection steps
and to compute the values to be used for container filling.