Fixes#328 - URL encode links when a redirector is set
* WARNING - template edit - new variable available : "real_url"
Contains the final real url (redirected or any other change on original URL)
* Don't redirect shaares link in RSS/Atom.
* Affects links shaared in description.
* Move text2clickable and keepMultipleSpaces to Utils.php + unit test
UPDATE:
* keepMultipleSpaces renamed to space2nbsp
* space2nbsp improved to handle single space at line beginning
* links in text description aren't 'nofollow' anymore
