fixed .clearfix example, + doc link

Small fix: I noticed the use of a deprecated variable.

don't create new Tooltip/Popover objects just to destroy them immediately

Clear timeout on destroy.

Add 'collapse' class back after expanding

Only preventDefault on click on [data-toggle="modal"] when the element is a link

Replace UTF-8 characters in s3_cache.py with ASCII characters

Update dependencies

Updates grunt-html-validation and grunt-jekyll dependencies.

Fix wrong indent in .jscs.json

Add docs-assets/css/docs.css to csslint too.

Change david-dm theme to make README badges uniform

Update dependencies.

Merge branch 'tooltip-events-fix' of git://github.com/lukaszfiszer/bootstrap into lukaszfiszer-tooltip-events-fix

Conflicts:
	js/tooltip.js

Use document scroll height instead of offset height