Added blog category-related events. Events are now published asynchronously when blog categories are added, deleted, and updated.
Extensions
Improvements to the Comment API servlet so that the comment plugin e-mail template is used when creating the e-mail. This means that comment e-mails from comments submitted by the comment plugin will have links to administer the comment such as to approve or delete the comment.
Plugins
Added the Permissions Check Plugin that allows you to check permissions of a user of the blog in your templates. This would allow you to dynamically change the look and feel of your site, for example, adding or deleting menu options.
Fixed error with Blog Administration Plugin where authorized users with the add_blog permission were allowed to add blogs outside of blogs authorized as "administrative" blogs.
Updated the Array Tool Plugin. Uses ExtendedListTool instead of ArrayTool and only instantiates one tool on startup which is shared per-request since the tool is threadsfe.