Add popover for web chat client

[KyleMit]

Add persistent chat icon to the page that expands to client when clicked

Simple implementation

function popupFunction() {
    var x = document.getElementById('chatFrame');
    if (x.style.visibility == 'hidden') {
        x.style.visibility = 'visible';
    }
    else {
        x.style.visibility = 'hidden';
    }
}