Documentation index update
Remove gui and drop things from the top namespace
Fix fallout
optional file readers

Conflicts:
	sunpy/io/jp2.py
more changes
io module is now not dependant upon every io method and tests pass
glymur comment
Move mpl dep out of util into visualization
update docs for vis module
plotting move regression
revert distribute changes
Merge branch 'master' into deps

Conflicts:
	sunpy/io/file_tools.py
	sunpy/io/fits.py
	sunpy/tests/net/test_helioviewer.py
Merge branch 'master' into deps
Merge branch 'master' into deps

Conflicts:
	sunpy/__init__.py
	sunpy/io/jp2.py
fix test failure and remove whitespace
remove commented import
Merge pull request #549 from Cadair/deps

Change top level imports
Merge remote-tracking branch 'upstream/master' into diff_rot_image

Conflicts:
	sunpy/map/mapbase.py
	sunpy/map/mapcube.py