Use Bootstrap tooltips

[qcaron]

Hi guys!

Bootstrap tooltips should be used for "Previous page" and other buttons with tooltip in the HTML paginator. See http://getbootstrap.com/javascript/#tooltips for more details.
I think tooltips should all be displayed on the bottom of the HTML elements.

I volounteer for this one ;)

Cheers,
Quentin

[jmcclell]

Great idea, actually. I'll be happy to merge a pull request in, but please make the tooltips optional and let people override the tooltip text vs display text. Though it does seem that the tag is pretty heavy with options.