#165: using close instead of stop to properly close application with rest api on

Author: Death111

src/main/java/de/doubleslash/keeptime/App.java

@@ -305,7 +305,7 @@ private void registerMaximizeEventlistener(final Scene mainScene, final Stage pr
 
    @Override
    public void stop() throws Exception {
-      springContext.stop();
+      springContext.close();
    }
 
 }