tmva: remove Ds DIRA variables from training vars
tmva: remove cosθ variable from training
tmva: remove Ds children pT from training
tmva: remove "Bs lifetime vertex χ²/ndof"

Not sure what this actually means, neither am I sure if the expression
is correct.
tmva: add ROOT fixes, and clean-up
tmvaconfig: bugfix, forgot dependency
tmvaconfig: case sensitive config parsing
tmvaconfig: bugfix, opposite string comparison
tmva: Update tasks
tmva: conf, fix radial flight distance

Earlier I was using normal flight distance.  Should be radial flight
distance.  Using flight distance directly might lead to decay time
biases.
tmva/rplotsh.py: an interactive plotting interface
rplotsh.py: bugfix, consistently use TKey
rplotsh.py: completions for ls & cd
rplotsh.py: simple renames
rplotsh.py: bugfix, ROOT & argparse interference