function _getBulletList(list) {
        var message = "<ul class='dialog-list'>";
        list.forEach(function (info) {
            message += "<li>" + info + "</li>";
        });
        message += "</ul>";
        return message;
    }
@private

Creates a bullet list item for any item in the given list.
@param {Array.<string>} list An array of strings to be converted into a
message string with a bullet list.
@return {string} the html text version of the list