add custom apps sorting (fix SideMenu and admin ui)

templates/settings/admin-form.php

@@ -796,9 +796,7 @@ $labelReset = 'Reset to default';
                     </div>
                 </div>
             </div>
-        </div>
 
-        <div class="side-menu-setting-table">
             <div class="side-menu-setting-row">
                 <div class="side-menu-setting-label">
                     <?php p($l->t('Apps visible in the top and side menus')); ?>
@@ -829,10 +827,22 @@ $labelReset = 'Reset to default';
                     </div>
                 </div>
             </div>
+        </div>
+    </div>
 
+    <div class="section">
+        <h2>
+            <?php p($l->t('Applications')); ?>
+        </h2>
+
+        <div class="side-menu-setting-table">
             <div class="side-menu-setting-row">
                 <div class="side-menu-setting-label">
                     <?php p($l->t('Customize sorting')); ?>
+                    <br>
+                    <em>
+                        <?php echo $l->t('This feature is not compatible with <code>big menu</code> and <code>with categories</code> displays.'); ?>
+                    </em>
                 </div>
                 <div class="side-menu-setting-form">
                     <a class="side-menu-toggler" data-target="#top-menu-apps-order-list" href="#_">