Update nuget + imbastito file upload, NON VA (errore server?)

TestClient/testing/Appunti.txt

@@ -0,0 +1,17 @@
+Chiamata upload --> da errore:
+
+{StatusCode: 500, ReasonPhrase: 'Internal Server Error', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
+{
+  x-ratelimit-limit: 5
+  x-ratelimit-remaining: 4
+  access-control-allow-origin: *
+  access-control-allow-headers: Cache-Control,X-reqed-With,x-requested-with
+  content-security-policy: default-src 'self'
+  x-content-type-options: nosniff
+  Alt-Svc: clear
+  Date: Fri, 29 Mar 2019 20:48:07 GMT
+  Via: 1.1 google
+  X-Powered-By: Express
+  Content-Length: 1148
+  Content-Type: text/html; charset=utf-8
+}}