[TWIG][Cards] Fullname is now displayed as the note author, nickname as an identification.

[CONTROLLER][Security] Fullname is set on resgistration to enable it to be shown by default in notes.
[CONTROLLER][UserPanel] Fullname extra step added.
[CSS] Fullname and nickname representation work.

src/Controller/Security.php

@@ -135,7 +135,7 @@ class Security extends Controller
 
             try {
                 // This already checks if the nickname is being used
-                $actor = Actor::create(['nickname' => $sanitized_nickname]);
+                $actor = Actor::create(['nickname' => $sanitized_nickname, 'fullname' => $sanitized_nickname]);
                 $user  = LocalUser::create([
                     'nickname'       => $sanitized_nickname,
                     'outgoing_email' => $data['email'],