Refactor authentication system (#2602)

Make auth configuration available via UI, remove FOSUserBundle and SAML-Bundle dependency

templates/security/self-registration/check_email.html.twig

@@ -0,0 +1,9 @@
+{% extends 'security/self-registration/layout.html.twig' %}
+
+{% block login_form %}
+
+    <p>
+        {{ 'registration.check_email'|trans({'%email%': user.email}) }}
+    </p>
+
+{% endblock %}

templates/security/self-registration/confirmed.html.twig

@@ -0,0 +1,16 @@
+{% extends 'security/self-registration/layout.html.twig' %}
+
+{% block login_form %}
+
+    <p>
+        {{ 'registration.confirmed'|trans({'%username%': user.username}, 'AdminLTEBundle') }}
+    </p>
+
+{% endblock %}
+
+{% block login_actions %}
+    <br>
+    <a href="{{ path('homepage') }}">
+        {{ 'Show homepage'|trans({}, 'AdminLTEBundle') }}
+    </a>
+{% endblock %}

templates/security/self-registration/layout.html.twig

@@ -0,0 +1,23 @@
+{% extends '@AdminLTE/FOSUserBundle/Registration/register.html.twig' %}
+
+{% block logo_login %}{% include 'partials/logo_login.html.twig' %}{% endblock %}
+{% block title %}{{- get_title() -}}{% endblock %}
+
+{% block head %}
+    {{ parent() }}
+    {% include 'partials/head.html.twig' %}
+    {% set event = trigger(constant('App\\Event\\ThemeEvent::HTML_HEAD')) %}
+    {{ event.content|raw }}
+{% endblock %}
+
+{% block stylesheets %}
+    {{ encore_entry_link_tags('app') }}
+    {% set event = trigger(constant('App\\Event\\ThemeEvent::STYLESHEET')) %}
+    {{ event.content|raw }}
+{% endblock %}
+
+{% block javascripts %}
+    {{ encore_entry_script_tags('app') }}
+    {% set event = trigger(constant('App\\Event\\ThemeEvent::JAVASCRIPT')) %}
+    {{ event.content|raw }}
+{% endblock %}

templates/security/self-registration/register.html.twig

@@ -0,0 +1 @@
+{% extends 'security/self-registration/layout.html.twig' %}