Fix t=0 axis colour
Ultra zoomed acceptance plot
Disable old lifetime::OfflineSelection()
Add BDTG and PIDK to tree

We want to see what creates the small decay time turn on.
Disable all MC truth branches

New MC tuples do not have those branches.  Revert the commit to add it
back.

NOTE: This means cannot do truth matching (particle ID = PDG ID)
Switch to new MC ntuples
Minor reformatting of accept.cc
Exclude more missing branches from new MC
Rename trigger branches (now lab0_<trigger>)
Remove MC match configurable
Change PID and BDTG variable spelling
Cut at 0.2 ps

See weird time = 0 or very close to 0 events.  Since there is a cut at
0.2 ps in stripping, no point in keeping them.
Remove 3rd argument default value from Loop(..)
Bug fix chain creation

- Name should be tree name in files.
- Also update file blog.
Add back MC and some missing branches

Revert commits

1. "Disable all MC truth branches"
   3a6beb78389f7bac8029b619c950930b60126a8b

   This means, MC truth maching is done again

2. "Exclude more missing branches from new MC"
   da1c7ae33ff6fba96986416196e57aaa508975ef.

   All the lab?_OSCIL branches, and some lab?_MINI* and lab?_Calo*
   branches are still missing.  lab?_BKGCAT branches are back.

Apart from this a few missing branch related fixes are included.
Fix branch data types (float/int <-> double/bool)
Cutflow table
New raw ratio plotting script
Variable binning for raw ratios (commented out)

Commented out for the moment as it looks horrible.  The idea is to
dump binning scheme with python/dump-var-bins.py, read and apply in
python/raw-ratios.py.

Also switch to creating histogram yourself (rootpy.plotting.Hist)
instead of relying on the 'expr>>hist' syntax used by TTree::Draw().
Clean-up and clearer axis labels for raw ratios