Fixed P2PDistance

Interface failed because tvtk is loaded with the default value
of ETSConfig.toolkit. Now it is initialized, so now the enthough.traitsui
does not look for $DISPLAY.
PEP8 formatting
enh: initial stab at matching conn preprocessing
sty: PEP8 cleanups
fix: code updates to run the workflow
Merge remote-tracking branch 'upstream/master' into enh/restingconn

* upstream/master:
  fix: path reference for summary file
fix: datasink substitution for target subject
Merge remote-tracking branch 'upstream/master' into enh/restingconn

* upstream/master: (131 commits)
  fix: image URL for python version
  fix: traits
  fix: use Directory from base
  doc: update sidebar badges
  doc: added fix to changes
  updated badges
  fix:docstring removed
  fix:added files to data folder so doctest passes
  New Freesurfer interface: MRIPretess
  fix: max_jobs plugin parameter now acts within the inner submission loop
  fix: matlab versioning
  Improved check
  Adding a second check
  improved exception passing
  Added some investigation to nonempty errors
  more explicit select files error message
  Added missing auto-generated tests
  Minor fixes, still needed some further tests
  fix: revert back example
  fix: spm12b compatibility
  ...
Merge remote-tracking branch 'upstream/master' into enh/restingconn

* upstream/master: (134 commits)
  sty: white spaces
  enh: added script for using ANTS instead of FNIRT for openfmri processing
  fix: support for FSL 5.0.7 changes to FILM_GLS
  fix: image URL for python version
  fix: traits
  fix: use Directory from base
  doc: update sidebar badges
  doc: added fix to changes
  updated badges
  fix:docstring removed
  fix:added files to data folder so doctest passes
  New Freesurfer interface: MRIPretess
  fix: max_jobs plugin parameter now acts within the inner submission loop
  fix: matlab versioning
  Improved check
  Adding a second check
  improved exception passing
  Added some investigation to nonempty errors
  more explicit select files error message
  Added missing auto-generated tests
  ...
Merge remote-tracking branch 'origin/enh/restingconn' into enh/restingconn

* origin/enh/restingconn:
Merge remote-tracking branch 'upstream/master' into enh/restingconn

* upstream/master:
  Fix: warnings complaining the IPython lexer
Merge remote-tracking branch 'upstream/master' into enh/restingconn

* upstream/master:
  Fix: warnings complaining the IPython lexer
  sty: white spaces
  enh: added script for using ANTS instead of FNIRT for openfmri processing
  fix: support for FSL 5.0.7 changes to FILM_GLS
Merge remote-tracking branch 'origin/enh/restingconn' into enh/restingconn

* origin/enh/restingconn:
fix: noise extraction algorithm
Merge remote-tracking branch 'origin/enh/restingconn' into enh/restingconn

* origin/enh/restingconn:
  fix: noise extraction algorithm
fix: some more syntax and computing fixes for noise extraction
enh: compatibility for multi-session datasets with potentially identical file names
Merge remote-tracking branch 'origin/enh/restingconn' into enh/restingconn

* origin/enh/restingconn:
  fix: some more syntax and computing fixes for noise extraction
Merge remote-tracking branch 'upstream/master' into enh/restingconn

* upstream/master:
  Update .travis.yml
  pep8
  ENH: tidy up fsl-epi tools
  fix typo
  fix:docstrings
  correcting docstrings of the utils file
  changed use of os.unlink in favour of os.remove
  fix:docstring of traits.Directory was not correctly generated
  bugfix: for unknown reasons WarpUtils produced wrong command lines (ii)
  bugfix: for unknown reasons WarpUtils produced wrong command lines
  fixed typo
  First version of img2imgcoord and img2stdcoord
  Review FSL eddy interface
update compcor code in workflows