Optimize gc

misc changes

1. add log output to console for config and admin service
2. remove dev, lpt, tooling logic
3. add default 2 seconds of initial delay to long polling

fix default charset issue

use custom connection validator instead of sending SELECT 1 query

support running in Git Bash on Windows

try to fix coverity bug

add create namespace open api

version to 0.7.0

load config file from working directory first

rename default profile from 'dev' to 'github' to avoid confusion

add config file change listener

load config file(apollo-env.properties) from working directory first, so that it behaves the same as spring boot config files

optimize find items interface

remove sudo before shutdown as it is not needed anymore

change Role Service to interface impl

use guice as apollo-client ioc mechanism