BF+ENH: fixed up the doctest and added few more rudimentary tests

also now we can load/use 25mm voxel dataset for tests
DOC: Event-related modeling tutorial
DOC: Minor doc polish
DOC: Split spatio-temporal SL in its own part.
BF: rst2ipnbpy -- embed hyperlinks correctly, skip some cells (e.g. note that it is avail as ipython notebook)
DOC: minor tune ups in datasets and other tutorials
BF: Syntax error that degrades doctest performance.
Merge branch 'master' of /media/mih/DD58-07C8/pymvpa

* 'master' of /media/mih/DD58-07C8/pymvpa:
  DOC: minor tune ups in datasets and other tutorials
  BF: rst2ipnbpy -- embed hyperlinks correctly, skip some cells (e.g. note that it is avail as ipython notebook)
  BF+ENH: fixed up the doctest and added few more rudimentary tests
DOC: my pass over mappers tutorial
Merge remote-tracking branch 'stick/master'

* stick/master:
  BF: Syntax error that degrades doctest performance.
  DOC: Split spatio-temporal SL in its own part.
  DOC: Minor doc polish
  DOC: Event-related modeling tutorial
ENH+DOC:  Convert the majority of examples into IPython notebooks
ENH: rst2ipnbpy -- strict # doctest directives
DOC: minor tune ups to mappers tutorial
Merge branch 'master' of github.com:PyMVPA/PyMVPA

* 'master' of github.com:PyMVPA/PyMVPA:
  ENH+DOC:  Convert the majority of examples into IPython notebooks
BF: Adhoc fix to let exported NIfTI files have a sane display range
DOC: Minor changes to docs and boosting now version for 2.3.0 release
Merge pull request #212 from hanke/sane_nifti_range

BF: Adhoc fix to let exported NIfTI files have a sane display range
Merge branch 'master' of github.com:PyMVPA/PyMVPA

* 'master' of github.com:PyMVPA/PyMVPA:
  BF: Adhoc fix to let exported NIfTI files have a sane display range
Adjusting changelog
BF: hyperplane_demo -- plotting of colorbar should happen together with imshow