refresh_file_list.js

var refreshFilenameList = function(data){
    // Standard handlebars template stuff.
    var templateText = $("#tableTemplate").html();
    var template = Handlebars.compile(templateText);
    var renderedText = template(data);
    var renderedDom = $(renderedText);
    $("#tablearea").empty();
    $("#tablearea").append(renderedDom);
};

var fileUploadSuccess = function(data){
    var url = "/filenames";
    var promise = $.get(url);
    promise.then(refreshFilenameList);
};