DOC add link to fetch_covertype to covertype narrative docs
DOC improve docstrings in sklearn.base

These show up on almost all estimators!
Converted Markdown style link to restructured text
Merge pull request #2345 from rgbkrk/patch-1

Converted Markdown style link to restructured text
Typo.
MAINT: remove sklearn.test()
MISC: deprecation notice

Indicate when the function will be removed.
first carousel version added
firefox fix and more images added, auto-cycling disabled
arrows switched for dots
have images link to relevant examples
slight layout adjust
small layout changes for firefox, images taken from generated images now
indentation fixes
add more examples and cropping to first image
disable carousel for small displays, small tweaks
DOC: reduce the number of examples

Base on @glouppe's feedback
MISC: document sklearn.test deprecation
ENH: custom distutils clean command

Leftover .pyd, .dll or .pyc files can cause import errors or test
failures.
ENH added an orange cite us button on the front page