Add authors to post + Invite guests on WordPress frontend

In a "closed" blogging environment only a post's authors can view their post. For this project, we will be using two jQuery scripts, Chosen and Bootstrap modal. For you to do well with this job, you must have a solid working knowledge of WordPress hooks and functions. This is a two-part plugin. ............................................................. Part One, Current Author Access note: An author for our purpose is a registered WordPress user. On the bottom of every post is a section that lists the current authors of that post. This script will move that list into a Chosen multiple select field. Users with access to the post can add new authors to the post by typing that person's details, specifically first or last name, username, display name or email address. We will be forking the Co-Authors Plus plugin which has a lot of this functionality already. We just need to integrate Chosen and add a shortcode so this can be done from the front-end. ............................................................. Part Two, Invite The second part of this script adds Facebook invite functionality to WordPress. I will supply a php framework for this. The script will add a button next to the Chosen fields that opens the Bootstrap modal. Inside the modal a user can invite their Facebook friends to that album. The script must add the invited person's email to the Co-Author's database tables so that when that email address registers that person can access that album right away. ............................................................. Documentation: Chosen: [login to view URL] Bootstrap JS: [login to view URL] Co-Authors Plus: [login to view URL] Facebook Invite Friends framework: [login to view URL]