增加获取app下载地址接口，登录页使用

o2server/x_console/src/main/java/com/x/server/console/server/web/WebServerTools.java

@@ -166,6 +166,7 @@ public class WebServerTools extends JettySeverTools {
 			/** 写入systemName */
 			map.put("footer", Config.collect().getFooter());
 			map.put("title", Config.collect().getTitle());
+			map.put("appUrl", Config.collect().getAppUrl());
 			/***/
 			if (centerServerConfig.getSslEnable()) {
 				map.put("app_protocol", "https:");