updating external modules
enabling ROOT 6 build
fixed issue #89
removing RooUnfoldTUnfold as it is no longer built in RooUnfold (problems with ROOT 6)
refactored the old ntuple info script (legacy) into the current framework
adding RooFit examples
updated TopAnalysis make file for ROOT 6
replaced ROOT's TMath.log with Python's math.log
Merge pull request #91 from kreczko/update-external-projects

updating external modules
Merge pull request #93 from kreczko/more_quiet_setup

fixed issue #89
Merge pull request #94 from kreczko/ntupleinfo

refactored the old ntuple info script (legacy) into the current framework
Merge pull request #92 from kreczko/root_6

enabling ROOT 6 build
updating configs for new fit variables
Added mutli-var fitting and tests, removed obsoletes
added functions adjust_overflow_to_limit & clean_control_region
added get_best_max_y and get_best_min_y functions to tools/plotting.py
 - updated fitting and plotting scripts for the new fit variables
 - added closure test and closure test type options to fitting script
 - added no_combined_signal option to fitting script
 - added test option to fitting script (just central measurement)
 - added disable-constraints option to fitting script
more control plots for the fit variables
moved closure test definitions here, addded JSON read functions for fit results
added commands to run & plot the fit checks