Dev#7832 profils url rewriting

URL.

- more test fixes
- php 5.6 compatibility

Page admin show errors on save

use Storm volatile branch

First call to findFirstBy overwrite $user variable.
A non valid user never can be loaded.

Check that 2 profils cannot be saved with same path

URL should only contains chars a-zA-Z0-9\-_

update to last ZF

Switch profil for cases:
- bokeh.fr/profil_url
- bokeh.fr/profil_url/page_url

add input fields in profil and page to enter its url