More additions for DB management (issue #125).

- Added an "sql" alias for the "query" command
- Updated output format for "query" command
- Small modification to BJPlayerInsurance table definition
- Split TTTourney table into TTTourney and TTPlayerTourney
- Added "change", "split", "doubledown" properties to BlackjackPlayer and
  removed hasSplit() and hasSurrendered() methods
- Added "query" command for Blackjack and TexasTourney
- Added code for saveDBGameStats() for both Blackjack and TexasTourney