Increase visibility for the GetBoardSizeFromGameType() function.
Add a function that transforms board locations to 3D coordinates.
Modify the function signature.
Add a method that provides access to the global Ogre root.
Add a BoardRenderer class that is resposible for drawing the game board.
Add missing chenges from previous commit.
Revert "Increase visibility for the GetBoardSizeFromGameType() function."

This reverts commit f9f35cae0b5f63cde50a5fb585a6ca3c781f95b9.
Add a list of file to be ignored by Git in the 'graphics' folder.