Ref: add new static analyser rule: category/java/bestpractices.xml/MissingOverride

src/main/java/com/sheepit/client/Server.java

@@ -116,6 +116,7 @@ public class Server extends Thread {
 		this.httpClient = getOkHttpClient();
 	}
 	
+	@Override
 	public void run() {
 		this.stayAlive();
 	}
@@ -191,7 +192,7 @@ public class Server extends Thread {
 		}
 	}
 	
-	public String toString() {
+	@Override public String toString() {
 		return String.format("Server (base_url '%s', user_config %s", this.base_url, this.user_config);
 	}