Messing with log files

- Fixed storing of whether pieces were revealed or not in log files
  - Just prepend '?' to the hidden types, removed the Piece.types_revealed list

- Implemented Agent resetting of board state from strings
  - ReplayPlayer will call the Agent.reset_board() function
  - run_agent() looks for lines between "BOARD" and "END BOARD"
  - This API will not be compulsory for entered agents
    - All games will start with the initial board state, it is not required

- Fixed other stuff with log files
  - Needed to work out whose turn it is when the game continues from a log
  - HttpLog -> ShortLog (since it just writes to a file)
  - To get a log from http, use --file=http://address
    - This works for either ShortLog or LogFile written logs
	- But if the game hasn't ended there is a bug with the LogFile logs
  - Can now have multiple logs at the same time

- Hopefully nothing is borked