2018-10-26 vscode terminal issue using maven springboot

1. vscode java extensions show unrecognized characters in problem panel
   found caused by java-hint/lint, so disable it in settings.json

2. vscode integrated terminal could not show all process by ps -ef
   since it is not a login shell

3. mvn spring-boot:run
   works in cmd but fails in vscode bash terminal since java_home shows wrong even in pure git-bash
   so export it in conf files, now it works in vscode terminal
   this runs a maven springboot app as demo

4. mvn jetty:run
   this runs a maven webapp as my maven wepapp demo