Changed access rights of files (had trouble running gradle). And
integrated code from sprint 3, and made code compile and unit tests
pass.
Refactored, morphed OthelloCalculator into RulesImpl
Simplified MoveController
GameFinishedObserver works now
Implemented & test Othello.getId()
First stab at a Tournament class
Tournament stuff done!
Refactored, replaced "calculator" with "rules" in all places.
Sprint 3 done, refactored, and squeeky clean!