Disable controls if user isn't able to perform the action

[marein]

Problem description Currently the invariants are only captured on the server. Following needs to be done in the web interface.

• [x] Disable button in game list if a player joined a game or aborted a game. #232 (sneaked in)
• [ ] Disable the fields in the game view if it's not the current player's turn or the column is already filled.
• [ ] Disable resign game button in game view if the game isn't resignable or the current user is not a player within that game.
• [ ] Disable abort game button in game view if the game isn't resignable or the current user is not a player within that game.