Implemented the simplest HTTP request to get current topic
Disabled failing test
Created an acceptance test to show current topic via HTTP polling (currently, dumb as hell)
Naive implementation of HttpTopicTrackerClient
Removed all WebSocket dependent stuff from the server
Removed WebSocket dependent stuff from the client side
HttpTopicTrackerClient uses AsyncTask to perform HTTP request
Extracted the interface Consumer<T> to accept data
Generalized HttpRequest by extracting the Provider<T> interface
HttpRequest uses Consumer<Exception> to handle the exceptions instead of the specific listener interface
Lighten the HttpTranslationEngine
Provider interface obtained the abort() method
Started to generalize HttpTranslationEngine
Extracted the bunch of classes to perform the general HTTP data transfer
Renamed ChatTranslationEngine -> ChatTranslation
CurrentTopicFragment uses DataEngine to retrieve topic
Removed redundant ChatTranslation class