ADDED: summary field to game status (and some comments)
REMOVED: uuid dependency (timestamp will be enough for a moment)
Tests code moved to separate file
Naming changed inter -> rubber
FIXED: commit c50a2171ad169b6f06009503c61e4d2a0df43d84 lies!!!
Only comments were added there. Field 'status' is added to record 'game_state' in this commit
ADDED counting summary after winning rubber
REMOVED param is_closed from record score
ADDED some tests for bs_server API functions
FIXED new game funstion passes defined tests
ADDED new tests
ADDED more tests