COMMONS-330: Cannot upload a file in activity stream when host name contains "portal"

Problem analysis
- Rest URL will be extracted from URL request which contains host name. If host name has "portal" word, eXo Platform cannot distinguish between host name and portal container name

Fix description
- Do not include host name in rest URL
COMMONS-328 : Folder name with accentued chars are not correctly displayed in breadcrumbs

Fix description:
- Reconvert from HTML code to orginal name before rendering.
Merge commit 'd3c40411b9062cc4123b67a64db30c60db3e7896' into HEAD