Pagination: accessible "go to page" links

Created by: ygatesoupe

Page links should mention to screen reader their function and which page they address, using aria-label attribute as following :

<li class="page-item"><a class="page-link" href="#" aria-label="Go to page 1">1</a></li>

Wrapping tag <nav> should define a navigation role :

<nav role="navigation">