Handle missing plugins

fixes #24

react/public/img/fx_error.svg

@@ -0,0 +1,11 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Generator: Adobe Illustrator 16.0.0, SVG Export Plug-In . SVG Version: 6.00 Build 0)  -->
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
+<svg version="1.1" id="Layer_1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px"
+	 width="48px" height="48px" viewBox="0 0 48 48" enable-background="new 0 0 48 48" xml:space="preserve">
+<g id="x">
+</g>
+<path fill="#800000" d="M41,1H7C3.687,1,1,3.687,1,7v34c0,3.313,2.687,6,6,6h34c3.313,0,6-2.688,6-6V7C47,3.687,44.313,1,41,1z
+	 M39.436,34.23l-5.205,5.205L24,29.205l-10.23,10.23L8.564,34.23L18.795,24L8.564,13.769l5.205-5.204L24,18.795l10.23-10.23
+	l5.205,5.204L29.205,24L39.436,34.23z"/>
+</svg>

react/public/var/config.json

@@ -1,7 +1,7 @@
 {
    "socket_server_port": 80,
    "socket_server_address": "*",
-
+   "debug": true,
     "max_upload_size": 1048576,
 
     "ui_plugins": [