Minor changes (untested)

Author: sarnobat

server.groovy

@@ -1367,22 +1367,15 @@ public class Yurl {
 			JSONObject categoriesTreeJson;
 			java.nio.file.Path path = Paths.get("/home/sarnobat/github/.cache/" + Yurl.ROOT_ID + ".json");
 			if (Files.exists(path)) {
-				System.out.println("Yurl.YurlResource.categoriesRecursive() reading categories from file");
 				categoriesTreeJson = new JSONObject(FileUtils.readFileToString(path.toFile()));
-				System.out.println("Yurl.YurlResource.categoriesRecursive() read categories from file");
 			} else {
-				System.out.println("Yurl.YurlResource.categoriesRecursive() 2");
 				if (categoriesTreeCache == null) {
-					System.out.println("Yurl.YurlResource.categoriesRecursive() 3");
 					categoriesTreeJson = ReadCategoryTree.getCategoriesTree(Yurl.ROOT_ID);
 				} else {
-					System.out.println("Yurl.YurlResource.categoriesRecursive() 4");
 					categoriesTreeJson = categoriesTreeCache;
 					refreshCategoriesTreeCacheInSeparateThread();
 				}
-				System.out.println("Yurl.YurlResource.categoriesRecursive() writing to file");
 				FileUtils.writeStringToFile(path.toFile(), categoriesTreeJson.toString(2));
-				System.out.println("Yurl.YurlResource.categoriesRecursive() written");
 			}
 			ret.put("categoriesTree", categoriesTreeJson);
 			return Response.ok().header("Access-Control-Allow-Origin", "*")