fix is Available
remove Field
remove arguments from constructor
remove gameController
remove DEFAULT_FIELD_SIZE
remove overloaded constructor
add fieldSize getter
add getField
comment out abortGame
fix start game
skip local variables in figureChecking
add getEmptyCells
fix nextTurn
fix typo
modify Player interface
update url
fix gameController access rights
remove coordinate check for container class
remove figure getter(is a public field)
skip CellInfo getter usage
remove 'throws'
remove unnecessary try block