fix "No way to access all notifications on mobile" NodeBB/NodeBB#4411

templates/header.tpl

@@ -67,6 +67,7 @@
 				<span class="counter" component="notifications/icon" data-content="0"></span>
 			</h3>
 			<ul class="menu-section-list notification-list-mobile" component="notifications/list"></ul>
+			<p class="menu-section-list"><a href="{relative_path}/notifications">[[notifications:see_all]]</a></p>
 		</section>
 
 		<section class="menu-section" data-section="chats">
@@ -86,4 +87,4 @@
 			</div>
 		</nav>
 		<div class="container" id="content">
-		<!-- IMPORT partials/noscript/warning.tpl -->
+		<!-- IMPORT partials/noscript/warning.tpl -->