Session favourites does not properly support multiple languages

I found this module and it has pretty much exactly the functionality I need for a project I'm working on. The only issue is that it doesn't properly support multiple languages. All the regions where users can input custom text don't allow for different content for different languages.

As a result, I've made the necessary changes to the module to properly allow multiple languages and I would like to submit it back as a patch. This patch was generated against release 6.x-1.5. Please let me know if there are any issue noticeable issues.