disable selection of text, (prevent selection highlighting for field)
remote loaded js-dependencies are bad
add uuids to activegame json
client has to know it's player-uuid to determine if it is his turn or not
only allow moves if it's the players turn
use options instead of working with null directly
display status message
display message when the game is over
waiting for other player message
If browser window was closed, remove player from game, display "Wait for player" message on other clients
use logger instead of println
blackOrWhite Function was only used once, so replace with inline if