Gracefully handle failed version check attempts

This issue what found by darkling, and reported on irc

airsonic-main/src/main/java/org/airsonic/player/service/VersionService.java

@@ -25,6 +25,7 @@ import org.apache.commons.io.IOUtils;
 import org.apache.http.client.ResponseHandler;
 import org.apache.http.client.config.RequestConfig;
 import org.apache.http.client.methods.HttpGet;
+import org.apache.http.conn.ConnectTimeoutException;
 import org.apache.http.impl.client.BasicResponseHandler;
 import org.apache.http.impl.client.CloseableHttpClient;
 import org.apache.http.impl.client.HttpClients;
@@ -243,6 +244,9 @@ public class VersionService {
         try (CloseableHttpClient client = HttpClients.createDefault()) {
             ResponseHandler<String> responseHandler = new BasicResponseHandler();
             content = client.execute(method, responseHandler);
+        } catch (ConnectTimeoutException e) {
+            LOG.warn("Got a timeout when trying to reach {}", VERSION_URL);
+            return;
         }
 
         List<String> unsortedTags = JsonPath.read(content, JSON_PATH);