add new API Demos project
refactor listeners
refactor SocialNetwork API
add setters for global listeners and fix OnRequestSocialPersonCompleteListener
register local listeners, remove local listeners if we cancel requests
add missed files for api_demos project
fix #1 OAuthLoginActivity progress bar style
comment old implementations
fix compilation issues
create 2 demo fragments in api_demos project
extend SocialNetworkListener.onError, add requestID param
UI for login demo fragments
login for twitter social netwrok using global listeners
remove calling onLoginSuccess if we already loggined, just trow exception
add ability to reset state of social networks
UI for load current profile
Improve UI for loading current user profile, request login if needed
Implement loading current profile for twitter, change progress dialog to progress dialog fragment
refactoring
add cancel all for SocialNetwork and implement cancel twitter login request