Add Charte static page (public + admin editing)

app/templates/header.php

@@ -50,6 +50,10 @@ $_thesisId     = $_GET['id'] ?? null;
                     <a href="/licence"
                        <?= ($_navCurrent === 'licence') ? 'aria-current="page"' : '' ?>>Licences</a>
                 </li>
+                <li>
+                    <a href="/charte"
+                       <?= ($_navCurrent === 'charte') ? 'aria-current="page"' : '' ?>>Charte</a>
+                </li>
                 <li>
                     <a href="/apropos"
                        <?= ($_navCurrent === 'apropos') ? 'aria-current="page"' : '' ?>>À Propos</a>
@@ -68,6 +72,10 @@ $_thesisId     = $_GET['id'] ?? null;
                 <a href="/licence"
                    <?= ($_navCurrent === 'licence') ? 'aria-current="page"' : '' ?>>Licences</a>
             </li>
+            <li>
+                <a href="/charte"
+                   <?= ($_navCurrent === 'charte') ? 'aria-current="page"' : '' ?>>Charte</a>
+            </li>
             <li>
                 <a href="/apropos"
                    <?= ($_navCurrent === 'apropos') ? 'aria-current="page"' : '' ?>>À Propos</a>

app/templates/public/charte.php

@@ -0,0 +1,9 @@
+<main class="apropos-main" id="main-content">
+    <div class="prose apropos-single">
+        <?php if (!empty(trim($content))): ?>
+            <?= $html ?>
+        <?php else: ?>
+            <p>Contenu à venir.</p>
+        <?php endif; ?>
+    </div>
+</main>