Fixes #7213 Collapse plugin does not correctly set the "collapsed" class on accordion heading links
Merge remote-tracking branch 'bootstrap/3.0.0-wip' into 3.0.0-wip

Conflicts:
	js/tests/unit/bootstrap-collapse.js
Merge remote-tracking branch 'bootstrap/3.0.0-wip' into 3.0.0-wip

Conflicts:
	js/bootstrap-collapse.js
Merge remote-tracking branch 'bootstrap/3.0.0-wip' into 3.0.0-wip
Merge pull request #7424 from sody/3.0.0-wip

Fixes #7213 Collapse plugin does not correctly set the "collapsed" class.