introduced authentication using passport
added passport providers twitter, facebook and anonymous
added login button to header
updated translations
updated feature switches
use production environment on Openshift
converted tabs to spaces
fixed popup id
fixed invalid logger name
added twitter-strategy to passport
added passport utilities
adedd checks for login-providers, auto-disable login-feature if no
active login-provider is found
manual click handling for login-button
fixed invalid method call
typo
removed appcache-manifest and settings
added comments
introduced UserManager
optimized config
moved non-public function into the local space