Introducing PollingChatTranslation class
Created an initial test case for PollingChatTranslation
PollingChatTranslation uses scheduler
Scheduler interface made more generic
ChatTranslationTest uses Scheduler
Use PollingConnectionChat in production
TODO comment
Chat server
Changed acceptance test for refreshing chat stream
Prepared PollingChatTranslation for future development
Implemented repeated refresh of chat stream
Implemented repeated refresh of chat stream
Introducing ChatFactory to avoid races in tests