No cache for suggested books

bookwyrm/templates/landing/landing.html

@@ -7,7 +7,8 @@
     <h2 class="title has-text-centered">{% trans "Recent Books" %}</h2>
 </div>
 
-{% cache 60 * 60 %}
+{% get_current_language as LANGUAGE_CODE %}
+{% cache 60 * 60 LANGUAGE_CODE %}
 <section class="tile is-ancestor">
     <div class="tile is-vertical is-6">
         <div class="tile is-parent">

bookwyrm/views/reading.py

@@ -46,11 +46,8 @@ class ReadingStatus(View):
             return HttpResponseBadRequest()
 
         # invalidate related caches
-        cache.delete_many(
-            [
-                f"suggested_books-{request.user.id}",
-                f"active_shelf-{request.user.id}-{book_id}",
-            ]
+        cache.delete(
+            f"active_shelf-{request.user.id}-{book_id}",
         )
 
         desired_shelf = get_object_or_404(