add config for OAuth login (with twitter)
remove not used config file and re-config using system properties, completed with google
add GUI for login with Oauth
change configuration to use system properties and add AuthenticationRegistryListener into web.xml
ok register with oauth
add temp for register portlet pass with oauth
edit Register controller
add comment as exo template
add json dependence for facebook login
resolve duplicate dependence in portal ui
clean some code for cleaner