fix bugs with note deletion

app/assets/javascripts/notes.js

@@ -380,6 +380,10 @@ Danbooru.Note = {
     },
     
     delete: function() {
+      if (!confirm("Do you really want to delete this note?")) {
+        return
+      }
+      
       var $this = $(this);
       var id = $this.data("id");
       Danbooru.Note.Box.find(id).remove();

app/controllers/notes_controller.rb

@@ -36,7 +36,7 @@ class NotesController < ApplicationController
   
   def destroy
     @note = Note.find(params[:id])
-    @note.update_column(:is_active, false)
+    @note.update_attribute(:is_active, false)
     respond_with(@note)
   end