Update to FOSUserBundle 3.1

Also remove some deprecation from Symfony.
Use `LegacyEventDispatcherProxy` to handle Symfony 4 dispatch from FOSUser

templates/bundles/CraueConfigBundle/Settings/modify.html.twig

@@ -0,0 +1,40 @@
+{% extends "@WallabagCore/layout.html.twig" %}
+
+{% block title %}{{ 'menu.left.internal_settings'|trans }}{% endblock %}
+
+{% block content %}
+    <div class="row">
+        <div class="col s12">
+            <div class="card-panel settings">
+                {{ form_start(form, {'attr': {'class': 'craue_config_settings_modify'}}) }}
+                    {{ form_errors(form) }}
+
+                    <div class="row">
+                        <div class="div_tabs col s12">
+                            <ul class="tabs">
+                                {% for section in sections|craue_sortSections %}
+                                    <li class="tab col s12 m6 l3"><a href="#set-{{ section }}">{{ section|trans({}, 'CraueConfigBundle') }}</a></li>
+                                {% endfor %}
+                            </ul>
+                        </div>
+
+                        {% for section in sections|craue_sortSections %}
+                            <div id="set-{{ section }}" class="col s12">
+                                {% for setting in form.settings if setting.vars.value.section == section %}
+                                    {{ form_row(setting.value, {
+                                        'label': setting.vars.value.name|trans({}, 'CraueConfigBundle'),
+                                    }) }}
+                                {% endfor %}
+                            </div>
+                        {% endfor %}
+                </div>
+
+                <button class="btn waves-effect waves-light" type="submit" name="action">
+                    {{ 'modify_settings'|trans({}, 'CraueConfigBundle') }}
+                </button>
+
+                {{ form_widget(form._token) }}
+            </div>
+        </div>
+    </div>
+{% endblock %}