Enable spell check in TinyMCE

I have a user who would like spell check built in to the TinyMCE. Looks like this is possible: http://www.tinymce.com/wiki.php/Plugin3x:spellchecker but it would be nice to have this functionality built in to the Omeka package.

It looks like Google has shut down the service that plugin would rely upon some time ago. The remaining options would require server-side support to work, and that's not something we're likely to add in.

There does seem to be some option for using the browser's built-in spellchecking, but it's not clear to me how well that's supported by the legacy TinyMCE version.

Thanks, John!