update scss translation until twitter/bootstrap@10452265

update code until this commit https://github.com/twitter/bootstrap/commit/1045226544c6f9396227974b5543df1caf74f8cf

# open issues

* mixins.scss
	- @mixin responsive-visibility()
	- @mixin responsive-invisibility()

	`tr&` etc. is not working in scss at the moment
		workaround to pass the build is `tr &`
		this generates different output!
		_help and feedback welcome_
build bootstrap v3.0.0-wip with sass version 3.2.9