update Facebook-iOS-SDK to 3.18
setup new global user-agent
Revert "setup new global user-agent"

This reverts commit 53b457c37515d7273904d17e0cddb2d05d8488da.
install AFNetworking

* update google-plus-ios-sdk
update EGOAuth2 component
before load member page, must login use token
add login and login failed message