Fix hidden.bs.tooltip and shown.bs.tooltip events firing too early in tooltip.js

* events fire only after the CSS animation is completed
* this fixes also events in popover.js (as it inherits from tooltip.js)
Merge branch 'tooltip-events-fix' of git://github.com/lukaszfiszer/bootstrap into lukaszfiszer-tooltip-events-fix

Conflicts:
	js/tooltip.js
build js