relieve hard jQuery requirement for range slider, legend, and smoother
clean up whitespace and formatting to make jshint happy
update Makefile to run jshint on build
update built libs
Merge branch 'subclassable-extensions'
Merge branch 'jshint-cleanup'

Conflicts:
	src/js/Rickshaw.Graph.Behavior.Series.Toggle.js
	src/js/Rickshaw.Graph.Smoother.js
support not clobbering data with d3 stack layouts
preserve orginal data when stacking; fixes #213
Merge branch 'master' into gh-pages