Merge branch 'master' into online_preproc

* master: (37 commits)
  Corrected function typo in camino ProcStreamlines
  More concise _format_arg function in camino ProcStreamlines
  Updated ProcStreamlines PR so that not to change inputs
  Now possible with camino ProcStreamlines (convert.py) to collect created probability maps as output.
  fix: remove debug print
  fix: remove duplicate of mandatory parameters from optional parameters
  Updated tests for streamtrack-derived interfaces
  Updated test for DTIfit
  Fix for stop argstr in MRtrix's Streamtrack interface
  Added tests
  Proper list conversion. Closes #811
  Fixed bug in FSL DTIFit interface
  mandatory cannot be false
  streamline outputs generation
  Fixed tracking specs
  Correction to last PR: name of Camino MESD output
  fix: encode empty lists
  Removed FSL PR from Camino PR
  Added Camino shredder and MESD functions in interface convert.py and odf.py respectively
  Added options to FSL UnaryMaths
  ...
change interface for detect
Merge branch 'online_preproc' into testing_tmp

* online_preproc:
  change interface for detect