fixing generation of figures
 removing reference to the sparse option
 improving webm conversion for notebooks / fixed progress bar
Merge branch 'master' of https://github.com/NeuralEnsemble/MotionClouds

* 'master' of https://github.com/NeuralEnsemble/MotionClouds:
  deletion
  Update
  Update
  Update
  Update
  Update
  delete .swp
  Update
  conf.py_2.0
  set in boxes
 install needs pyprind
 working on notebooks ...