Hi Paul
Advanced TinyMCE Configuration allows you to specify valid elements for TinyMCE – you should be able to find the relevant part of that to add it into your plugin and add the I element if it’s not in the list.
Any thoughts on adding the extra stylings such as fa-lg and fa-fw to the inserted tags?
Thanks for getting back to me so quickly. That sounds perfect, thanks very much.
I also need this, as we cannot update our account to use Google Plus until this is supported.