Update node.js and npm versions used on netlify (#1839)

* kick netlify

* do not make travis do work here

* Use newer node.js on netlify

* does it work from cache?

* Revert "do not make travis do work here"

This reverts commit 8dad8807644d547dfb9aa3b6d097e9f6a24162e5.

netlify.toml

@@ -6,4 +6,5 @@ ID = "uppy"
 
 [context.deploy-preview]
 command = "npm run build && npm run web:inject-disc && npm run web:build"
+environment = { NODE_VERSION = "10" }
 publish = "website/public"

website/themes/uppy/layout/index.ejs

@@ -22,7 +22,7 @@
         <div class="IndexDemo-uppy" id="demo"></div>
       </div>
     </div> <!-- /live-demo -->
-    
+
     <div class="TabPane" id="video">
       <div class="IndexDemo-video">
         <video autoplay loop muted playsinline>