fix if statement to choose input/number widget based on django version
add option to animate bootstrap carousel by adding slide class
Merge remote-tracking branch 'upstream/master'

Conflicts:
	cmsplugin_cascade/bootstrap3/carousel.py
update animate option to use CheckboxSelectMultiple
bootstrap3.carousel options to use default_css_attributes instead of overriding get_css_classes
Merge remote-tracking branch 'upstream/master'
Merge pull request #4 from jotielim/master

add option to animate the carousel for bootstrap3