Update config to support multiple processes

Use dto namespace instead of model and updated the demo page

Merge MetaServer into ConfigServer

增加portal前端页面&创建app功能

Add RefreshScope support

Add demo page for apollo client usage illustration purpose

Config war plugin to work when there is no web.xml

Config Server to load configurations from db

Fix Eureka Service Discovery

Add ServiceDiscovery based on ZK

Load property source from remote config server

Add Privilege service,repo,controller and test in Portal

init apollo client

Update framework parent pom

Update portal sample test case