Adding statistic functionality Part III.(Finish him)

-add update last record, remove, remove all and
update indexes functionality.

-add statistic records limit( 10 records ).
If count of records are less then limit, insert new
statistic records, else update the last record.

Also:

-fix mission status bug( when game is over
mission status remains the same ).
In GameState constructor set mission status
to "MissionRunning"