Small admin changes

boards/admin.py

@@ -15,20 +15,23 b' class PostAdmin(admin.ModelAdmin):'
 @admin.register(Tag)
 class TagAdmin(admin.ModelAdmin):
 
-    list_display = ('name',)
+    def thread_count(self, obj: Tag) -> int:
+        return obj.get_thread_count()
+
+    list_display = ('name', 'thread_count')
     search_fields = ('name',)
 
 
 @admin.register(Thread)
 class ThreadAdmin(admin.ModelAdmin):
 
-    def title(self, obj):
+    def title(self, obj: Thread) -> str:
         return obj.get_opening_post().get_title()
 
-    def reply_count(self, obj):
+    def reply_count(self, obj: Thread) -> int:
         return obj.get_reply_count()
 
-    def ip(self, obj):
+    def ip(self, obj: Thread):
         return obj.get_opening_post().poster_ip
 
     list_display = ('id', 'title', 'reply_count', 'archived', 'ip')