Added tests for building, unit, player
Changed modify and set health in gameobject
Moved some deprecated classes
Added TestTile
Refactored Test names, removed "Placeholder" class
Added a reference to the gameboard in the factory buildBuilding method.
This is done to check the map for overlapping and valid building
placement before the building is constructed.
Added error checking for occupied area on the map
Refactoring and removed old gameboard test
Merge pull request #10 from CSc436/backend-dev-tests

Backend dev tests