imp: Display tickets views if user is an agent

Before, an agent without the `orga:see:tickets:all` permission would not
see the tickets views. I realized then that an agent without this
permission is a normal case in certain situations.

docs/developers/roles.md

@@ -116,6 +116,11 @@ if ($authorizer->isGranted('orga:see', $organization)) {
 if ($authorizer->isGrantedToUser($a_user, 'orga:see', $organization)) {
     // …
 }
+
+// Check if the current user is an agent
+if ($authorizer->isAgent($organization)) {
+    // …
+}
 ```
 
 In templates:
@@ -130,9 +135,14 @@ In templates:
 {% if is_granted_to_user(a_user, 'orga:manage', organization) %}
     <a href="...">Delete</a>
 {% endif %}
+
+{# Check if the current user is an agent #}
+{% if is_agent(organization) %}
+    <a href="...">Delete</a>
+{% endif %}
 ```
 
-You can check that a permission is given at least by one authorization:
+You can check that a permission is given at least by one authorization by passing `any` instead of an organization:
 
 ```php
 $this->denyAccessUnlessGranted('orga:see', 'any');

templates/organizations/tickets/index.html.twig

@@ -19,7 +19,7 @@
 {% block title %}{{ title ~ ' – ' ~ organization.name }}{% endblock %}
 
 {% block sidebar %}
-    {% if is_granted('orga:see:tickets:all', 'any') %}
+    {% if is_agent('any') %}
         {{ include('tickets/_sidebar.html.twig', {
             current: view,
             countOwned: countOwned,
@@ -30,7 +30,7 @@
 
 {% block body %}
     <main class="layout__body">
-        <div class="flow wrapper wrapper--large {{ not is_granted('orga:see:tickets:all', 'any') ? 'wrapper--center' }}">
+        <div class="flow wrapper wrapper--large {{ not is_agent('any') ? 'wrapper--center' }}">
             <div class="layout__breadcrumb">
                 <a href="{{ path('organization', { uid: organization.uid }) }}">{{ organization.name }}</a>
                 <h1>{{ title }}</h1>

templates/tickets/index.html.twig

@@ -19,7 +19,7 @@
 {% block title %}{{ title }}{% endblock %}
 
 {% block sidebar %}
-    {% if is_granted('orga:see:tickets:all', 'any') %}
+    {% if is_agent('any') %}
         {{ include('tickets/_sidebar.html.twig', {
             current: view,
             countOwned: countOwned,
@@ -30,7 +30,7 @@
 
 {% block body %}
     <main class="layout__body">
-        <div class="flow wrapper wrapper--large {{ not is_granted('orga:see:tickets:all', 'any') ? 'wrapper--center' }}">
+        <div class="flow wrapper wrapper--large {{ not is_agent('any') ? 'wrapper--center' }}">
             <div class="layout__breadcrumb">
                 <h1>{{ title }}</h1>
             </div>