add loading.gif as well

Author: AngledLuffa

src/edu/stanford/nlp/pipeline/StanfordCoreNLPServer.java

@@ -1809,6 +1809,8 @@ public void run(Optional<Pair<String,String>> basicAuth,
       withAuth(server.createContext(uriContext+"/webfont.js", new BytesFileHandler("edu/stanford/nlp/pipeline/demo/webfont.js", "application/javascript")), basicAuth);
 
       withAuth(server.createContext(uriContext+"/img/corenlp-title.png", new BytesFileHandler("edu/stanford/nlp/pipeline/demo/corenlp-title.png", "image/png")), basicAuth);
+      withAuth(server.createContext(uriContext+"/img/loading.gif", new BytesFileHandler("edu/stanford/nlp/pipeline/demo/loading.gif", "image/gif")), basicAuth);
+
       withAuth(server.createContext(uriContext+"/ping", new PingHandler()), Optional.empty());
       withAuth(server.createContext(uriContext+"/shutdown", new ShutdownHandler()), basicAuth);
       if (this.serverPort == this.statusPort) {