New BAO BOSS measurements, more analyze options and clearer help

* devel: (43 commits)
  Comments
  Fixed documentation and changelog
  Fixed behaviour for configuration file when in different directory
  Rephrasing of an error message
  Removed debug statements
  Added a default transparency setting for comparing two folders
  Added a comment on the acceptance rate
  Brought mpi run and the new parser in agreement
  update version number
  update changelog to v2.0.3
  Changed a subprocess call for compatibility with Python2.6
  Fixed error on git
  Implemented a default subparser
  add a note about error when git is not installed
  improved docstring
  added a note on sub-covariance matrix
  README adapted to subparsers
  Tests adapted to use the subparsers
  `argparse.ArgumentParser` subclassed to use `io_mp.ConfigurationError` for unified look of errors
  function `recover_local_path` adapted to subparsers. in function `initialise` indented all code supposed to `run`
  ...
Importance Sampling, and parsing improvements

* devel:
  Add more checks for experiments used for importance sampling
  Mock implementation of covariance matrix update - never called
  --all fontsize fixed for 2d plots, still wrong for 1d
  Bug-fix with the --all option. Now works, but fonts still off
  Some adjustement to the plot-2d option
  Importance Sampling finished
  Upgraded the version number
  Importance Sampling still being tested
  Fixed --comp behaviour
  Update to changelog
  Tests for Importance Sampling, and bug-fix on analyze
  Implemented Importance Sampling
  fixed the scaling relation
  Typo in comment
MPI with Nested Sampling, output of histograms, better derived params

* devel:
  Added a first draft of testing NestedSampling implementation
  Update the VERSION number
  description of v2.0.5
  Now also stores the 1d histograms
  NS: test .param file for the test_gaussian likelihood improved.
  NS: fixing test_gaussian likelihood II
  NS: fixing test_gaussian likelihood I
  NS: fixed issue about 'init_MPI' undefined when analysing'
  NS: trivial documentation
  NS: fixed last commit.
  NS: 1st working implementation of MPI.
  NS: run.py -- 1st attempt
  NS: added NS initialise to initialise.py
  NS: separated initialisation from run
  Properly manage the deprecated warning
  Updated the reading of derived param to follow the new scheme
  Output of histogram now documented, function for reading it too
  --all now also ouptut the histogram, with not so many comments yet
  Fixed the --all option to output proper contour points
  changed default setting for Cosmo Hammer
JLA, Polarbear, analyze 2.0

* 2.1: (74 commits)
  changelog expanded
  bumped version number
  fixed bao_2013 values, using exact sound horizon
  further clarified impot error for lkl
  updated changelog and tests to reflect latest lensing behaviour
  better error message for importing lkl
  JLA_simple fixed, removed z_hel in computation
  JLA fixed
  removed heavy JLA data files, with error handling
  added dependencies
  style
  added link to POLARBEAR article
  global legend for 2d plots
  added param files for actstp+Planck
  added config for Landscape
  comments, doc improved, README
  cleared up color chosing in analyze
  get_tex_names now ignores already tex names
  fancy short/long help messages
  corrected typo in manipulate_matrices
  ...
added deprecation warning for old command line arguments
Slight modification of #29
Add a deprecated warning for people still using old syntax #29

* montefra-parse-deprecate:
  Slight modification of #29
  added deprecation warning for old command line arguments