WIP on first talk-Talk steps...

* added SQL schema
* added a few PHP libraries : Laravel's Illuminate Database library, Anthony Ferrara's "password compat" library, Symfony Translation & Config components
* added jQuery to core assets
* added "db", "crypt", "translator", "validator", "uuid" services to "core/core" plugin
* added Notifications display to the Twig layout
* added "core/auth" plugin
* some CS fix