Refactor User system (FOS and Guard bridges)

[lenybernard]

Description

FOSUserBundle shouldn't be required as it's intrusive, it's the final developper choice

Resolution Ideas

We can keep the parts of code related to FOSUserBundle but in the form of a bridge. Guard seems to be the next (current?) standard: http://symfony.com/doc/current/security/guard_authentication.html

There isn't so much of features to have in mind when refactoring this but it should be available natively and easy to override:

• login
• forgot password

Then, we won't require friendsofsymfony/user-bundle but suggest it in composer.json.

Related to

Bundle	--	--	--
Analytics		Page
Blog		Query
BusinessEntity		Seo
BusinessPage		Sitemap
Core		Template
Criteria		Twig
Filter		User	✔
Form		ViewReference
I18n		Widget
Media		WidgetMap
UI